BABYL OPTIONS: -*- rmail -*- Version: 5 Labels: Note: This is the header of an rmail file. Note: If you are seeing it in rmail, Note: it means the file has no messages in it.  1,, Mail-from: From miccianc@theory.lcs.mit.edu Thu Feb 6 04:55:29 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA24540; Thu, 06 Feb 97 09:53:55 EST From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA02059; Thu, 06 Feb 97 09:55:29 EST Date: Thu, 06 Feb 97 09:55:29 EST Message-Id: <199702061455.AA02059@lark.lcs.mit.edu> To: 6042-teachers Subject: mailing lists *** EOOH *** Return-Path: From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Date: Thu, 06 Feb 97 09:55:29 EST To: 6042-teachers Subject: mailing lists hi, this is a test message for 6042-teachers. Sorry, if anyone gets this more than once. The following mailing lists have been set up: 6042-secretary: be 6042-lecturer: karger, 6042-secretary 6042-tas: miccianc, tiuzzol@mit.edu, dimitri, alexv, gupta, 6042-secretary 6042-teachers: 6042-lecturer, 6042-tas 6042-forum: all students and 6042-teachers Daniele.  1,, Mail-from: From miccianc@theory.lcs.mit.edu Thu Feb 6 05:59:13 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA26265; Thu, 06 Feb 97 10:57:39 EST From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA02068; Thu, 06 Feb 97 10:59:13 EST Date: Thu, 06 Feb 97 10:59:13 EST Message-Id: <199702061559.AA02068@lark.lcs.mit.edu> To: 6042-teachers Subject: recitations and tutorials *** EOOH *** Return-Path: From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Date: Thu, 06 Feb 97 10:59:13 EST To: 6042-teachers Subject: recitations and tutorials Recitation and tutorial assignments are on the course webpage now. A few students still don't have a recitation or tutorial assigned to them. Rooms for the tutorials should also be figured out. I have to leave now. Can some of you put the tutorial rooms in the file maketable.pl (in the admin directory) and then type make to update the webpage? The latest file with the student data is "students". Changes in recitations and tutorial assignments should be made there. Also, send an email to 6042-forum to inform the students of the existence of the mailing list. thanks, Daniele.  1,, Mail-from: From miccianc@theory.lcs.mit.edu Thu Feb 6 08:54:19 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA01129; Thu, 06 Feb 97 13:52:45 EST From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA02132; Thu, 06 Feb 97 13:54:19 EST Date: Thu, 06 Feb 97 13:54:19 EST Message-Id: <199702061854.AA02132@lark.lcs.mit.edu> To: 6042-teachers *** EOOH *** Return-Path: From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Date: Thu, 06 Feb 97 13:54:19 EST To: 6042-teachers I updated the recitation rooms. Daniele.  1,, Mail-from: From chiuyi@MIT.EDU Thu Feb 6 11:30:48 1997 Return-Path: Received: from MIT.EDU (SOUTH-STATION-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA05167; Thu, 06 Feb 97 16:31:18 EST Received: from W20-575-121.MIT.EDU by MIT.EDU with SMTP id AB17207; Thu, 6 Feb 97 16:31:11 EST From: chiuyi@MIT.EDU Received: by w20-575-121.MIT.EDU (5.x/4.7) id AA00393; Thu, 6 Feb 1997 16:30:49 -0500 Message-Id: <9702062130.AA00393@w20-575-121.MIT.EDU> To: 6042-teachers@theory.lcs.mit.edu Subject: request for change of 6.042 recitaion Date: Thu, 06 Feb 1997 16:30:48 EST *** EOOH *** Return-Path: From: chiuyi@MIT.EDU To: 6042-teachers@theory.lcs.mit.edu Subject: request for change of 6.042 recitaion Date: Thu, 06 Feb 1997 16:30:48 EST hi, I need to change my recitaion time to Friday 1:00 pm. My ID # 972840140 Thank you Chiuyi Chan  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Thu Feb 6 13:36:54 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA08701; Thu, 06 Feb 97 18:36:26 EST Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA01248; Thu, 06 Feb 97 18:36:55 EST Message-Id: <199702062336.AA01248@peacock.lcs.mit.edu> To: chiuyi@MIT.EDU Cc: 6042-teachers@theory.lcs.mit.edu, dimitrip Subject: Re: request for change of 6.042 recitaion In-Reply-To: Your message of Thu, 06 Feb 97 16:30:48 -0500. <9702062130.AA00393@w20-575-121.MIT.EDU> Date: Thu, 06 Feb 97 18:36:54 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: chiuyi@MIT.EDU Cc: 6042-teachers@theory.lcs.mit.edu, dimitrip Subject: Re: request for change of 6.042 recitaion In-Reply-To: Your message of Thu, 06 Feb 97 16:30:48 -0500. <9702062130.AA00393@w20-575-121.MIT.EDU> Date: Thu, 06 Feb 97 18:36:54 -0500 From: dimitrip@theory.lcs.mit.edu You have been switched to section 1a. Please inform your recitation instructor. Dimitri -------------------------------------------------------- hi, I need to change my recitaion time to Friday 1:00 pm. My ID # 972840140 Thank you Chiuyi Chan  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Thu Feb 6 14:50:13 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA10064; Thu, 06 Feb 97 19:49:44 EST Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA01542; Thu, 06 Feb 97 19:50:13 EST Message-Id: <199702070050.AA01542@peacock.lcs.mit.edu> To: 6042-teachers Subject: tutorials Date: Thu, 06 Feb 97 19:50:13 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-teachers Subject: tutorials Date: Thu, 06 Feb 97 19:50:13 -0500 From: dimitrip@theory.lcs.mit.edu Hello, Algebra provides us with some nice simple problems. After defining a group we can ask them to: a) Prove that the identity is unique. b) Provide a proof by contradiction, to show that invereses are unique (hint: first show that ab = ac => b = c and ba = ca => b = c ) c) inv(inv(a)) = a d) inv(ab) = inv(b)inv(a) We can also find an exercise that requires a proof by cases but I need to think a little more about it. What do you think? Dimitri  1,, Mail-from: From gupta@theory.lcs.mit.edu Thu Feb 6 15:44:12 1997 Return-Path: Received: from emu.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA10901; Thu, 06 Feb 97 20:45:31 EST From: gupta@theory.lcs.mit.edu (David Gupta) Received: by emu.lcs.mit.edu (5.65c/TOC-1.2C) id AA04730; Thu, 06 Feb 97 20:44:12 EST Date: Thu, 06 Feb 97 20:44:12 EST Message-Id: <199702070144.AA04730@emu.lcs.mit.edu> To: 6042-teachers@theory.lcs.mit.edu, gupta Subject: tutorials: abstract algebra problems *** EOOH *** Return-Path: From: gupta@theory.lcs.mit.edu (David Gupta) Date: Thu, 06 Feb 97 20:44:12 EST To: 6042-teachers@theory.lcs.mit.edu, gupta Subject: tutorials: abstract algebra problems Hi, I took a class once which had a bunch of physics grad students in it. The proofs of these identities or very similar ones were given in lecture, and even then almost all of these graduate students seemed to have trouble understanding what was going on. I think they're great examples of reasoning from axioms, but I'm worried that this might be expecting too much from them. By the way, isn't it easy to show directly that inverses are unique even from just the statement ab = ac => b = c? David  1,, Mail-from: From karger@theory.lcs.mit.edu Thu Feb 6 16:27:10 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA11486; Thu, 06 Feb 97 21:29:28 EST From: karger@theory.lcs.mit.edu (David R. Karger) Received: by ibis (SMI-8.6/TOC-1.2C) id VAA06885; Thu, 6 Feb 1997 21:27:10 -0500 Date: Thu, 6 Feb 1997 21:27:10 -0500 Message-Id: <199702070227.VAA06885@ibis> To: 6042-teachers@theory.lcs.mit.edu, gupta, gupta@theory.lcs.mit.edu Subject: Re: tutorials: abstract algebra problems *** EOOH *** Return-Path: From: karger@theory.lcs.mit.edu (David R. Karger) Date: Thu, 6 Feb 1997 21:27:10 -0500 To: 6042-teachers@theory.lcs.mit.edu, gupta, gupta@theory.lcs.mit.edu Subject: Re: tutorials: abstract algebra problems The advantage of tutorial is that you can provide as much help as is needed to solve the problem. I think what is important in a good tutorial problem is not its degree of difficulty, but rather how well it can be decomposed into very small steps that you can help the students take. I think the algebra statement might fall into this category, especially if you tell them to "build intuition" by considering well known groups (Z,+), (R-{0},*) first... -d  1,, Mail-from: From miccianc@theory.lcs.mit.edu Fri Feb 7 05:32:23 1997 Return-Path: Received: from ostrich.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA22476; Fri, 07 Feb 97 10:33:59 EST From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Received: by ostrich.lcs.mit.edu (5.65c/TOC-1.2C) id AA00668; Fri, 07 Feb 97 10:32:23 EST Date: Fri, 07 Feb 97 10:32:23 EST Message-Id: <199702071532.AA00668@ostrich.lcs.mit.edu> To: 6042-teachers Subject: webpage *** EOOH *** Return-Path: From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Date: Fri, 07 Feb 97 10:32:23 EST To: 6042-teachers Subject: webpage dear colleagues, I'd like to bring to your attention that I am spending a considerable amount of time in maintaining the homepage: almost 2 hours a day on the average, it will probably decrease in the next weeks, but I think it will stay well above 3 hours a week. I suggest this task be put on weekly rotation with the others. An alternative solution could be taking the maintainance of the homepage as my specific task, and being taken out from the rotation for the other editing tasks. Daniele.  1,, Mail-from: From luka@MIT.EDU Fri Feb 7 05:34:41 1997 Return-Path: Received: from MIT.EDU (PACIFIC-CARRIER-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA22520; Fri, 07 Feb 97 10:34:48 EST Received: from MARINARA.MIT.EDU by MIT.EDU with SMTP id AA17463; Fri, 7 Feb 97 10:34:46 EST From: luka@MIT.EDU Received: by marinara.MIT.EDU (5.57/4.7) id AA29561; Fri, 7 Feb 97 10:34:44 -0500 Message-Id: <9702071534.AA29561@marinara.MIT.EDU> To: 6042-tas@theory.lcs.mit.edu Cc: luka@MIT.EDU Subject: recitation change Date: Fri, 07 Feb 1997 10:34:41 EST *** EOOH *** Return-Path: From: luka@MIT.EDU To: 6042-tas@theory.lcs.mit.edu Cc: luka@MIT.EDU Subject: recitation change Date: Fri, 07 Feb 1997 10:34:41 EST i just got assigned a 6.004 recitation at 1:00 pm friday, and a 6.042 recitation at the same time. can we change my 6.042 recitation assignment, please? i am available for either of the other times (2pm or 3pm on fridays). my name is peter luka. student id # 980346798  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Fri Feb 7 06:15:01 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA23703; Fri, 07 Feb 97 11:15:04 EST Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA04631; Fri, 07 Feb 97 11:15:33 EST Message-Id: <199702071615.AA04631@peacock.lcs.mit.edu> To: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Cc: 6042-teachers, dimitrip Subject: Re: webpage In-Reply-To: Your message of Fri, 07 Feb 97 10:32:23 -0500. <199702071532.AA00668@ostrich.lcs.mit.edu> Date: Fri, 07 Feb 97 11:15:01 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Cc: 6042-teachers, dimitrip Subject: Re: webpage In-Reply-To: Your message of Fri, 07 Feb 97 10:32:23 -0500. <199702071532.AA00668@ostrich.lcs.mit.edu> Date: Fri, 07 Feb 97 11:15:01 -0500 From: dimitrip@theory.lcs.mit.edu Hello, I think that whoever creates a document (notes, homework, tutorial tec..) should be responsible for posting it on the web. If there is more work involved in maintaining the web page then we should adopt one of your proposed solutions. Either of them seems good to me. Dimitri mit-  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Fri Feb 7 06:17:11 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA23775; Fri, 07 Feb 97 11:16:42 EST Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA04654; Fri, 07 Feb 97 11:17:11 EST Message-Id: <199702071617.AA04654@peacock.lcs.mit.edu> To: luka@MIT.EDU Cc: 6042-tas@theory.lcs.mit.edu, dimitrip Subject: Re: recitation change In-Reply-To: Your message of Fri, 07 Feb 97 10:34:41 -0500. <9702071534.AA29561@marinara.MIT.EDU> Date: Fri, 07 Feb 97 11:17:11 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: luka@MIT.EDU Cc: 6042-tas@theory.lcs.mit.edu, dimitrip Subject: Re: recitation change In-Reply-To: Your message of Fri, 07 Feb 97 10:34:41 -0500. <9702071534.AA29561@marinara.MIT.EDU> Date: Fri, 07 Feb 97 11:17:11 -0500 From: dimitrip@theory.lcs.mit.edu Just go to whichever recitation you can today and I will switch you to some other time for next week (most probably 3) Dimitri o  1,, Mail-from: From karger@theory.lcs.mit.edu Fri Feb 7 06:14:58 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA23804; Fri, 07 Feb 97 11:17:19 EST From: karger@theory.lcs.mit.edu (David R. Karger) Received: by ibis (SMI-8.6/TOC-1.2C) id LAA08532; Fri, 7 Feb 1997 11:14:58 -0500 Date: Fri, 7 Feb 1997 11:14:58 -0500 Message-Id: <199702071614.LAA08532@ibis> To: dimitrip@theory.lcs.mit.edu, miccianc@theory.lcs.mit.edu Subject: Re: webpage Cc: 6042-teachers, dimitrip *** EOOH *** Return-Path: From: karger@theory.lcs.mit.edu (David R. Karger) Date: Fri, 7 Feb 1997 11:14:58 -0500 To: dimitrip@theory.lcs.mit.edu, miccianc@theory.lcs.mit.edu Subject: Re: webpage Cc: 6042-teachers, dimitrip Attaching a document to the web page is a part of the responsibility of producing that document. There was a lot of one-time work on the web page for setup (thanks Daniele) but things should be relatively unintensive from now on. Since we will all be editing the web page, I will check it in to RCS. -David  1,, Mail-from: From pkkim@MIT.EDU Fri Feb 7 11:51:42 1997 Return-Path: Received: from MIT.EDU (SOUTH-STATION-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA02870; Fri, 07 Feb 97 16:51:58 EST Received: from BARKER-5-5.MIT.EDU by MIT.EDU with SMTP id AA26422; Fri, 7 Feb 97 16:51:55 EST From: pkkim@MIT.EDU Received: by barker-5-5.MIT.EDU (5.x/4.7) id AA10272; Fri, 7 Feb 1997 16:51:42 -0500 Message-Id: <9702072151.AA10272@barker-5-5.MIT.EDU> To: 6042-tas@theory.lcs.mit.edu Subject: recitations and tutorials. Date: Fri, 07 Feb 1997 16:51:42 EST *** EOOH *** Return-Path: From: pkkim@MIT.EDU To: 6042-tas@theory.lcs.mit.edu Subject: recitations and tutorials. Date: Fri, 07 Feb 1997 16:51:42 EST Hi. My name is Peter Kim and I just added 6.042 as one of my classes. I attended a recitation today that i would like to stay in if possible. This recitation is in 26-310 at 2:00. I would also like to attend a tutorial next monday if possible. I would like a 2:00 tutorial but if not then at 3;00. Thank You. -Peter Kim  1,, Mail-from: From pkkim@MIT.EDU Fri Feb 7 11:53:04 1997 Return-Path: Received: from MIT.EDU (SOUTH-STATION-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA02912; Fri, 07 Feb 97 16:53:20 EST Received: from BARKER-5-5.MIT.EDU by MIT.EDU with SMTP id AA26811; Fri, 7 Feb 97 16:53:12 EST From: pkkim@MIT.EDU Received: by barker-5-5.MIT.EDU (5.x/4.7) id AA10279; Fri, 7 Feb 1997 16:53:05 -0500 Message-Id: <9702072153.AA10279@barker-5-5.MIT.EDU> To: 6042-tas@theory.lcs.mit.edu Subject: recitations and tutorials. Date: Fri, 07 Feb 1997 16:53:04 EST *** EOOH *** Return-Path: From: pkkim@MIT.EDU To: 6042-tas@theory.lcs.mit.edu Subject: recitations and tutorials. Date: Fri, 07 Feb 1997 16:53:04 EST Hi. My name is Peter Kim and I just added 6.042 as one of my classes. I attended a recitation today that i would like to stay in if possible. This recitation is in 26-310 at 2:00. I would also like to attend a tutorial next monday if possible. I would like a 2:00 tutorial but if not then at 3;00. Thank You. -Peter Kim -oh sorry but can i get an email back as soon as possible answering some of these questions...thankx  1,, Mail-from: From miccianc@theory.lcs.mit.edu Fri Feb 7 13:08:08 1997 Return-Path: Received: from ostrich.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA06241; Fri, 07 Feb 97 18:09:44 EST From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Received: by ostrich.lcs.mit.edu (5.65c/TOC-1.2C) id AA02218; Fri, 07 Feb 97 18:08:08 EST Date: Fri, 07 Feb 97 18:08:08 EST Message-Id: <199702072308.AA02218@ostrich.lcs.mit.edu> To: 6042-forum *** EOOH *** Return-Path: From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Date: Fri, 07 Feb 97 18:08:08 EST To: 6042-forum In today's recitation taught by Alex an 8.03 kit items was left behind. If it belongs to you, you can pick it up from NE43-342. Alex.  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Mon Feb 10 05:26:53 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA04208; Mon, 10 Feb 97 10:26:26 EST Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA02573; Mon, 10 Feb 97 10:26:55 EST Message-Id: <199702101526.AA02573@peacock.lcs.mit.edu> To: pkkim@MIT.EDU Cc: 6042-tas@theory.lcs.mit.edu, dimitrip Subject: Re: recitations and tutorials. In-Reply-To: Your message of Fri, 07 Feb 97 16:53:04 -0500. <9702072153.AA10279@barker-5-5.MIT.EDU> Date: Mon, 10 Feb 97 10:26:53 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: pkkim@MIT.EDU Cc: 6042-tas@theory.lcs.mit.edu, dimitrip Subject: Re: recitations and tutorials. In-Reply-To: Your message of Fri, 07 Feb 97 16:53:04 -0500. <9702072153.AA10279@barker-5-5.MIT.EDU> Date: Mon, 10 Feb 97 10:26:53 -0500 From: dimitrip@theory.lcs.mit.edu Hello, You have been asigned to recitation 2a and tutorial 2B. Dimitri  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Mon Feb 10 05:28:15 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA04248; Mon, 10 Feb 97 10:27:46 EST Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA02618; Mon, 10 Feb 97 10:28:15 EST Message-Id: <199702101528.AA02618@peacock.lcs.mit.edu> To: luka@MIT.EDU Cc: 6042-tas@theory.lcs.mit.edu, dimitrip Subject: Re: recitation change In-Reply-To: Your message of Fri, 07 Feb 97 10:34:41 -0500. <9702071534.AA29561@marinara.MIT.EDU> Date: Mon, 10 Feb 97 10:28:15 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: luka@MIT.EDU Cc: 6042-tas@theory.lcs.mit.edu, dimitrip Subject: Re: recitation change In-Reply-To: Your message of Fri, 07 Feb 97 10:34:41 -0500. <9702071534.AA29561@marinara.MIT.EDU> Date: Mon, 10 Feb 97 10:28:15 -0500 From: dimitrip@theory.lcs.mit.edu Hello, You have been assigned to recitation 3a. Dimitri  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Mon Feb 10 06:06:58 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA05096; Mon, 10 Feb 97 11:06:29 EST Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA03049; Mon, 10 Feb 97 11:06:58 EST Message-Id: <199702101606.AA03049@peacock.lcs.mit.edu> To: 6042-forum Cc: 6042-tas Subject: recitations and tutorials Date: Mon, 10 Feb 97 11:06:58 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-forum Cc: 6042-tas Subject: recitations and tutorials Date: Mon, 10 Feb 97 11:06:58 -0500 From: dimitrip@theory.lcs.mit.edu Hello, Please check your recitation and tutorial room assignments on the web and make sure that you go to the correct room. If you wish to switch time or section please send me mail: dimitrip@theory.lcs. Cheers, Dimitri  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Mon Feb 10 06:14:24 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA05320; Mon, 10 Feb 97 11:13:56 EST Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA03099; Mon, 10 Feb 97 11:14:25 EST Message-Id: <199702101614.AA03099@peacock.lcs.mit.edu> To: 6042-tas Subject: email addresses Date: Mon, 10 Feb 97 11:14:24 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-tas Subject: email addresses Date: Mon, 10 Feb 97 11:14:24 -0500 From: dimitrip@theory.lcs.mit.edu Hello, Please remember to inform your students that if they are not receiving any email from us, it means that we have their email address wrong and they should give us the correct one. Dimitri  1,, Mail-from: From miccianc@theory.lcs.mit.edu Mon Feb 10 06:18:08 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA05391; Mon, 10 Feb 97 11:16:32 EST From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA00384; Mon, 10 Feb 97 11:18:08 EST Date: Mon, 10 Feb 97 11:18:08 EST Message-Id: <199702101618.AA00384@lark.lcs.mit.edu> To: 6042-tas Subject: [molnarl@MIT.EDU: tutorials] *** EOOH *** Return-Path: From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Date: Mon, 10 Feb 97 11:18:08 EST To: 6042-tas Subject: [molnarl@MIT.EDU: tutorials] Return-Path: Sender: molnarl@MIT.EDU Date: Sat, 08 Feb 1997 23:05:24 -0500 From: Lajos Molnar Organization: Massachusetts Institute of Technology X-Mailer: Mozilla 3.01 (X11; I; SunOS 5.4 sun4m) Mime-Version: 1.0 To: miccianc@theory.lcs.mit.edu Cc: molnarl@MIT.EDU Subject: tutorials Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Hi, Just wanted to tell you that I have dropped the class, so you don't have to worry about my tutorial assignment. I was one of those who couldn't make it on Mon 1, 2 or 3. Lajos Molnar  1,, Mail-from: From amlau@MIT.EDU Mon Feb 10 06:45:50 1997 Return-Path: Received: from MIT.EDU (SOUTH-STATION-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA06434; Mon, 10 Feb 97 11:45:55 EST Received: from M11-113-10.MIT.EDU by MIT.EDU with SMTP id AA24999; Mon, 10 Feb 97 11:45:56 EST From: amlau@MIT.EDU Received: by m11-113-10.MIT.EDU (5.x/4.7) id AA25786; Mon, 10 Feb 1997 11:45:53 -0500 Message-Id: <9702101645.AA25786@m11-113-10.MIT.EDU> X-Mailer: exmh version 1.6.7 5/3/96 To: 6042-tas@theory.lcs.mit.edu Subject: 4:00 tutorial Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Mon, 10 Feb 1997 11:45:50 EST *** EOOH *** Return-Path: From: amlau@MIT.EDU X-Mailer: exmh version 1.6.7 5/3/96 To: 6042-tas@theory.lcs.mit.edu Subject: 4:00 tutorial Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Mon, 10 Feb 1997 11:45:50 EST I was wondering if there had been any progress in finding solutions for the 6.042 4:00 tutorial. Previously I had checked the 6042 homepage and it had listed me as a 4:00 on Monday recitation, but no room. But more recently the 4:00 time slot has even been deleted. It is 11:45 on Monday now, and I do not know what time slot I will be attending. Please let me know asap as tutorial is manditory attendance if I am correct. Thank you. Andrew Lau amlau@mit.edu  1,, Mail-from: From akhtar@MIT.EDU Mon Feb 10 09:16:58 1997 Return-Path: Received: from MIT.EDU (PACIFIC-CARRIER-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA13151; Mon, 10 Feb 97 14:17:00 EST Received: from MIT.MIT.EDU by MIT.EDU with SMTP id AA21653; Mon, 10 Feb 97 14:16:59 EST Received: from AKHTAR.MIT.EDU by MIT.MIT.EDU (5.61/4.7) id AA28842; Mon, 10 Feb 97 14:16:58 EST Message-Id: <9702101916.AA28842@MIT.MIT.EDU> X-Sender: akhtar@po8.mit.edu X-Mailer: Windows Eudora Pro Version 2.1.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Mon, 10 Feb 1997 14:16:58 -0500 To: dimitrip@theory.lcs.mit.edu From: Kareem A H Akhtar Subject: Re: recitations and tutorials Cc: 6042-tas@theory.lcs.mit.edu *** EOOH *** Return-Path: X-Sender: akhtar@po8.mit.edu X-Mailer: Windows Eudora Pro Version 2.1.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Mon, 10 Feb 1997 14:16:58 -0500 To: dimitrip@theory.lcs.mit.edu From: Kareem A H Akhtar Subject: Re: recitations and tutorials Cc: 6042-tas@theory.lcs.mit.edu Hi, what's the web page address? kareem Akhtar At 11:06 AM 2/10/97 -0500, dimitrip@theory.lcs.mit.edu wrote: > >Hello, > > Please check your recitation and tutorial room >assignments on the web and make sure that you go to the >correct room. If you wish to switch time or section please >send me mail: dimitrip@theory.lcs. > >Cheers, > >Dimitri > > >  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Mon Feb 10 12:17:25 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA26699; Mon, 10 Feb 97 17:16:57 EST Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA05241; Mon, 10 Feb 97 17:17:26 EST Message-Id: <199702102217.AA05241@peacock.lcs.mit.edu> To: Kareem A H Akhtar Cc: dimitrip@theory.lcs.mit.edu, 6042-tas@theory.lcs.mit.edu, dimitrip Subject: Re: recitations and tutorials In-Reply-To: Your message of Mon, 10 Feb 97 14:16:58 -0500. <9702101916.AA28842@MIT.MIT.EDU> Date: Mon, 10 Feb 97 17:17:25 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: Kareem A H Akhtar Cc: dimitrip@theory.lcs.mit.edu, 6042-tas@theory.lcs.mit.edu, dimitrip Subject: Re: recitations and tutorials In-Reply-To: Your message of Mon, 10 Feb 97 14:16:58 -0500. <9702101916.AA28842@MIT.MIT.EDU> Date: Mon, 10 Feb 97 17:17:25 -0500 From: dimitrip@theory.lcs.mit.edu http://theory.lcs.mit.edu/classes/6.042/rectut.html -------------------------------------------------------- Hi, what's the web page address? kareem Akhtar At 11:06 AM 2/10/97 -0500, dimitrip@theory.lcs.mit.edu wrote: > >Hello, > > Please check your recitation and tutorial room >assignments on the web and make sure that you go to the >correct room. If you wish to switch time or section please >send me mail: dimitrip@theory.lcs. > >Cheers, > >Dimitri > > >  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Mon Feb 10 15:09:12 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA01342; Mon, 10 Feb 97 20:08:43 EST Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA06521; Mon, 10 Feb 97 20:09:13 EST Message-Id: <199702110109.AA06521@peacock.lcs.mit.edu> To: 6042-teachers Subject: last tutorial Date: Mon, 10 Feb 97 20:09:12 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-teachers Subject: last tutorial Date: Mon, 10 Feb 97 20:09:12 -0500 From: dimitrip@theory.lcs.mit.edu Hello, Can somebody tell me what happened with the 4pm tutorial? Dimitri  1,, Mail-from: From tiuzzol@MIT.EDU Mon Feb 10 15:11:32 1997 Return-Path: Received: from MIT.EDU (SOUTH-STATION-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA01380; Mon, 10 Feb 97 20:11:34 EST Received: from RINGWORLD.MIT.EDU by MIT.EDU with SMTP id AA10148; Mon, 10 Feb 97 20:11:34 EST Received: (from tiuzzol@localhost) by ringworld.MIT.EDU (8.6.11/8.6.11) id UAA07439 for 6042-tas@theory.lcs; Mon, 10 Feb 1997 20:11:32 -0500 Date: Mon, 10 Feb 1997 20:11:32 -0500 From: Terri Iuzzolino Message-Id: <199702110111.UAA07439@ringworld.MIT.EDU> To: 6042-tas@theory.lcs.MIT.EDU Subject: Office hours *** EOOH *** Return-Path: Date: Mon, 10 Feb 1997 20:11:32 -0500 From: Terri Iuzzolino To: 6042-tas@theory.lcs.MIT.EDU Subject: Office hours When are people having office hours? We should really announce them ASAP. Alex is doing Friday afternoon I believe. I'd like to do Monday afternoon or evening, but I don't want to overlap everyone else. What were people hoping to do time/daywise? Terri  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Mon Feb 10 15:21:17 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA01612; Mon, 10 Feb 97 20:20:48 EST Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA06611; Mon, 10 Feb 97 20:21:18 EST Message-Id: <199702110121.AA06611@peacock.lcs.mit.edu> To: 6042-teachers Subject: urgent matters Date: Mon, 10 Feb 97 20:21:17 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-teachers Subject: urgent matters Date: Mon, 10 Feb 97 20:21:17 -0500 From: dimitrip@theory.lcs.mit.edu Hello, I wonder if it would be advisable to have a meeting tomorrow. There are a couple of serious issues that are pending. 1) Office Hours: We have to decide when to hold them and post them somewhere. 2) Graders/6th TA: Do we have enough graders? Is there going to be another TA? We have to work out a system of collecting the homework and then passing it back. 3) Grading: This may turn out to be a major problem. All grades must be maintained in the same place. I think it will be hard to maintain a grade sheet in the same way we maintain the students list. We may have to use a spreadsheet like xess. Dimitri  1,, Mail-from: From karger@theory.lcs.mit.edu Mon Feb 10 16:06:51 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA02698; Mon, 10 Feb 97 21:09:18 EST From: karger@theory.lcs.mit.edu (David R. Karger) Received: by ibis (SMI-8.6/TOC-1.2C) id VAA16700; Mon, 10 Feb 1997 21:06:51 -0500 Date: Mon, 10 Feb 1997 21:06:51 -0500 Message-Id: <199702110206.VAA16700@ibis> To: 6042-teachers, dimitrip@theory.lcs.mit.edu Subject: Re: urgent matters *** EOOH *** Return-Path: From: karger@theory.lcs.mit.edu (David R. Karger) Date: Mon, 10 Feb 1997 21:06:51 -0500 To: 6042-teachers, dimitrip@theory.lcs.mit.edu Subject: Re: urgent matters sure; let's talk after class.  1,, Mail-from: From miccianc@theory.lcs.mit.edu Mon Feb 10 17:40:36 1997 Return-Path: Received: from ostrich.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA04035; Mon, 10 Feb 97 22:42:17 EST From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Received: by ostrich.lcs.mit.edu (5.65c/TOC-1.2C) id AA01416; Mon, 10 Feb 97 22:40:36 EST Date: Mon, 10 Feb 97 22:40:36 EST Message-Id: <199702110340.AA01416@ostrich.lcs.mit.edu> To: 6042-teachers Subject: office hours *** EOOH *** Return-Path: From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Date: Mon, 10 Feb 97 22:40:36 EST To: 6042-teachers Subject: office hours I suggest the following office hours: friday 4-6 friday 5-7 monday 10-12 monday 4-6 monday 5-7 I can do it at any of the times above. Send me email of when you want to hold your office hours and I'll put them on the webpage. Daniele  1,, Mail-from: From miccianc@theory.lcs.mit.edu Tue Feb 11 08:18:26 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA18305; Tue, 11 Feb 97 13:16:49 EST From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA00767; Tue, 11 Feb 97 13:18:26 EST Date: Tue, 11 Feb 97 13:18:26 EST Message-Id: <199702111818.AA00767@lark.lcs.mit.edu> To: rebecka@mit.edu In-Reply-To: <199702111800.NAA19838@ibis> (karger@theory.lcs.mit.edu) Subject: Re: please check Cc: 6042-teachers *** EOOH *** Return-Path: From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Date: Tue, 11 Feb 97 13:18:26 EST To: rebecka@mit.edu In-Reply-To: <199702111800.NAA19838@ibis> (karger@theory.lcs.mit.edu) Subject: Re: please check Cc: 6042-teachers This semester course webpage is at URL http://theory.lcs.mit.edu/classes/6.042 Both times and rooms should be uptodate there. If you still have problems finding out your recitation time and room email directly to me. (miccianc@theory.lcs.mit.edu). From rebecka@way-too-hosed.mit.edu Tue Feb 11 12:49:08 1997 From: Rebecka Schulman To: "David R. Karger" Subject: Re: 6042 Date: Tue, 11 Feb 1997 12:49:35 EST I got the times for last semester from the course web page, which I think is partially update. Anyhow, yes, it would be great if someone could change these times. The weird thing is though, that the recitation times are updated (I think) but the locations are not.. Rebecca Schulman  1,, Mail-from: From miccianc@theory.lcs.mit.edu Tue Feb 11 13:31:40 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA26043; Tue, 11 Feb 97 18:30:03 EST From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA00800; Tue, 11 Feb 97 18:31:40 EST Date: Tue, 11 Feb 97 18:31:40 EST Message-Id: <199702112331.AA00800@lark.lcs.mit.edu> To: 6042-tas Subject: rectut *** EOOH *** Return-Path: From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Date: Tue, 11 Feb 97 18:31:40 EST To: 6042-tas Subject: rectut The rectut.html file shouldn't be under RCS as it is updated automatically from the "students" file in the admin directory. Any change of recitation or tutorial should be entered in the admin/students file. rectut.html is updated by typing "make" from the admin directory. Daniele.  1,, Mail-from: From gupta@theory.lcs.mit.edu Tue Feb 11 14:58:26 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA27949; Tue, 11 Feb 97 19:57:56 EST From: gupta@theory.lcs.mit.edu (David Gupta) Received: by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA12978; Tue, 11 Feb 97 19:58:26 EST Date: Tue, 11 Feb 97 19:58:26 EST Message-Id: <199702120058.AA12978@peacock.lcs.mit.edu> To: 6042-forum Subject: conflict tutorial *** EOOH *** Return-Path: From: gupta@theory.lcs.mit.edu (David Gupta) Date: Tue, 11 Feb 97 19:58:26 EST To: 6042-forum Subject: conflict tutorial Hello all, There will definitely be a tutorial scheduled outside the M1-3 block. If you have conflicts with *ALL* the scheduled Monday tutorials, please send e-mail ASAP to gupta@theory.lcs.mit.edu listing all times Monday 8:00am-9:00pm and Tuesday 8:00am-9:00pm when you could make a tutorial. Please don't leave out any times you could possibly make, but you can indicate which times are better or worse. You should send this information even if you have sent it before. Please include an asterisk (*) and the words "conflict tutorial" in the header of your message. This applies only to those who have conflicts with all the scheduled tutorials. Other scheduling requests should be addressed to 6042-headta@theory.lcs.mit.edu. David Gupta  1,, Mail-from: From karger@theory.lcs.mit.edu Tue Feb 11 18:19:14 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA00966; Tue, 11 Feb 97 23:21:36 EST Received: by ibis (SMI-8.6/TOC-1.2C) id XAA20593; Tue, 11 Feb 1997 23:19:14 -0500 Date: Tue, 11 Feb 1997 23:19:14 -0500 Message-Id: <199702120419.XAA20593@ibis> From: "David R. Karger" To: 6042-teachers In-Reply-To: <199702110121.AA06611@peacock.lcs.mit.edu> (dimitrip@theory.lcs.mit.edu) Subject: Re: urgent matters *** EOOH *** Return-Path: Date: Tue, 11 Feb 1997 23:19:14 -0500 From: "David R. Karger" To: 6042-teachers In-Reply-To: <199702110121.AA06611@peacock.lcs.mit.edu> (dimitrip@theory.lcs.mit.edu) Subject: Re: urgent matters Just some reminders. 1. post your office hours on the web; I'll announce them thursday 2. #graders is increasing;we'll probably be fine by thursday. 3. have you figured out the details of the grade recording scheme?  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Wed Feb 12 06:05:18 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA11065; Wed, 12 Feb 97 11:04:52 EST Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA16197; Wed, 12 Feb 97 11:05:22 EST Message-Id: <199702121605.AA16197@peacock.lcs.mit.edu> To: "David R. Karger" Cc: 6042-teachers, dimitrip Subject: Re: urgent matters In-Reply-To: Your message of Tue, 11 Feb 97 23:19:14 -0500. <199702120419.XAA20593@ibis> Date: Wed, 12 Feb 97 11:05:18 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: "David R. Karger" Cc: 6042-teachers, dimitrip Subject: Re: urgent matters In-Reply-To: Your message of Tue, 11 Feb 97 23:19:14 -0500. <199702120419.XAA20593@ibis> Date: Wed, 12 Feb 97 11:05:18 -0500 From: dimitrip@theory.lcs.mit.edu item 3: The only feasible solution that I see at the moment is to maintain an xess file in the 6.042 locker in athena. Teachers and graders should have permission to this locker but nobody else. Who knows how to do that? Dimitri ---------------------------------------------------------- Just some reminders. 1. post your office hours on the web; I'll announce them thursday 2. #graders is increasing;we'll probably be fine by thursday. 3. have you figured out the details of the grade recording scheme?  1,, Mail-from: From josephli@MIT.EDU Wed Feb 12 17:07:25 1997 Return-Path: Received: from MIT.EDU (SOUTH-STATION-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA29166; Wed, 12 Feb 97 22:07:26 EST Received: from BARKER-5-5.MIT.EDU by MIT.EDU with SMTP id AA11315; Wed, 12 Feb 97 22:07:26 EST Received: by barker-5-5.MIT.EDU (5.x/4.7) id AA08519; Wed, 12 Feb 1997 22:07:25 -0500 Message-Id: <9702130307.AA08519@barker-5-5.MIT.EDU> To: 6042-tas@theory.lcs.mit.edu Date: Wed, 12 Feb 1997 22:07:25 EST From: Joseph *** EOOH *** Return-Path: To: 6042-tas@theory.lcs.mit.edu Date: Wed, 12 Feb 1997 22:07:25 EST From: Joseph I was wondering if answer to the tutorials will be given out. Also, will there also be a question and answer section on the web where relevent emailed questions and their answers would be posted. Thanks. Joseph Li  1,, Mail-from: From tiuzzol@theory.lcs.mit.edu Wed Feb 12 19:59:08 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA01352; Thu, 13 Feb 97 00:58:37 EST From: tiuzzol@theory.lcs.mit.edu (Terri Iuzzolino) Received: by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA21179; Thu, 13 Feb 97 00:59:08 EST Date: Thu, 13 Feb 97 00:59:08 EST Message-Id: <199702130559.AA21179@peacock.lcs.mit.edu> To: 6042-teachers Subject: Random odds and ends *** EOOH *** Return-Path: From: tiuzzol@theory.lcs.mit.edu (Terri Iuzzolino) Date: Thu, 13 Feb 97 00:59:08 EST To: 6042-teachers Subject: Random odds and ends Couple of questions: Do we know the time/place for the "4pm" tutorial yet? Scott Schneider (scottsch@mit.edu) is the one who cannot make any recitations apparently. Has anyone talked to him about this? Terri  1,, Mail-from: From tiuzzol@MIT.EDU Thu Feb 13 05:43:07 1997 Return-Path: Received: from MIT.EDU (PACIFIC-CARRIER-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA08746; Thu, 13 Feb 97 10:43:09 EST Received: from RINGWORLD.MIT.EDU by MIT.EDU with SMTP id AA18424; Thu, 13 Feb 97 10:43:09 EST Received: (from tiuzzol@localhost) by ringworld.MIT.EDU (8.6.11/8.6.11) id KAA06191 for 6042-teachers@theory.lcs.mit.edu; Thu, 13 Feb 1997 10:43:07 -0500 Date: Thu, 13 Feb 1997 10:43:07 -0500 From: Terri Iuzzolino Message-Id: <199702131543.KAA06191@ringworld.MIT.EDU> To: 6042-teachers@theory.lcs.mit.edu Subject: Administrata *** EOOH *** Return-Path: Date: Thu, 13 Feb 1997 10:43:07 -0500 From: Terri Iuzzolino To: 6042-teachers@theory.lcs.mit.edu Subject: Administrata Hey guys, we now have access to the 6.042 locker (yay!) You should all be on the ACLs. If you can't access something, let me know. Also, nevermind on the question about Scott Schneider.... (the one who I thought couldn't make recitations) Terri  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Thu Feb 13 05:52:03 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA08921; Thu, 13 Feb 97 10:51:34 EST Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA23124; Thu, 13 Feb 97 10:52:04 EST Message-Id: <199702131552.AA23124@peacock.lcs.mit.edu> To: Joseph Cc: 6042-tas@theory.lcs.mit.edu, dimitrip In-Reply-To: Your message of Wed, 12 Feb 97 22:07:25 -0500. <9702130307.AA08519@barker-5-5.MIT.EDU> Date: Thu, 13 Feb 97 10:52:03 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: Joseph Cc: 6042-tas@theory.lcs.mit.edu, dimitrip In-Reply-To: Your message of Wed, 12 Feb 97 22:07:25 -0500. <9702130307.AA08519@barker-5-5.MIT.EDU> Date: Thu, 13 Feb 97 10:52:03 -0500 From: dimitrip@theory.lcs.mit.edu The answer to both questions is no. Your questions about tutorials, homework and any other course related matter will be resolved in office hours. Dimitri -------------------------------------------------------- I was wondering if answer to the tutorials will be given out. Also, will there also be a question and answer section on the web where relevent emailed questions and their answers would be posted. Thanks. Joseph Li  1,, Mail-from: From gupta@theory.lcs.mit.edu Thu Feb 13 14:03:13 1997 Return-Path: Received: from swift.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA22729; Thu, 13 Feb 97 19:05:28 EST From: gupta@theory.lcs.mit.edu (David Gupta) Received: by swift.lcs.mit.edu (5.65c/TOC-1.2C) id AA01438; Thu, 13 Feb 97 19:03:13 EST Date: Thu, 13 Feb 97 19:03:13 EST Message-Id: <199702140003.AA01438@swift.lcs.mit.edu> To: 6042-forum Subject: new 7:00 tutorial on Tuesdays *** EOOH *** Return-Path: From: gupta@theory.lcs.mit.edu (David Gupta) Date: Thu, 13 Feb 97 19:03:13 EST To: 6042-forum Subject: new 7:00 tutorial on Tuesdays Hello all, The current plan is to keep all of the tutorials meeting in the M1-3 block and have an additional tutorial meeting Tuesday at 7:00pm. If you have unavoidable conflicts with all of these times, please send e-mail to gupta@theory.lcs.mit.edu. Please bear with us as we shuffle tutorial assignments to resolve conflicts and balance tutorial sizes. Requests for schedule changes should be sent to 6042-headta@theory.lcs.mit.edu. We have not yet reserved a room for the new 7:00pm tutorial. This information will be made available when we have it. David Gupta  1,, Mail-from: From alexv@theory.lcs.mit.edu Fri Feb 14 14:06:28 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA21444; Fri, 14 Feb 97 19:12:45 EST From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Received: by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA00890; Fri, 14 Feb 97 19:06:28 EST Date: Fri, 14 Feb 97 19:06:28 EST Message-Id: <199702150006.AA00890@phoinix.lcs.mit.edu> To: 6042-tas In-Reply-To: "David R. Karger"'s message of Fri, 14 Feb 1997 09:14:49 -0500 <199702141414.JAA27690@ibis> Subject: lecture 4 notes *** EOOH *** Return-Path: From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Date: Fri, 14 Feb 97 19:06:28 EST To: 6042-tas In-Reply-To: "David R. Karger"'s message of Fri, 14 Feb 1997 09:14:49 -0500 <199702141414.JAA27690@ibis> Subject: lecture 4 notes Hello David, Daniele and Terry, As you all know there are 11 problem set solutions to be created and edited and 26 lectures to be edited among the 5 of us this semester. Approximately 2 problem sets and 5 lectures per person. I will write solutions for PS 2 and 3. We need volunteers to check them. We also need volunteers to edit lecture 4 (last Thursday's lecture, Feb 13) and lecture 5. Please let me know if you've done work and have not been given credit. Please, check below. Thanks. -- Alex. Work done so far or Assigned: Problem Set Solutions: Problem Set 1: Terry Problem Set 2: Alex Problem Set 3: Alex Problem Sets Checked: Problem Set 1: Daniele Problem Set 2: Problem Set 3: Lectures: Lect. 1: David Lect. 2: Lect. 3: Lect. 4: Lect. 5:  1,, Mail-from: From tiuzzol@MIT.EDU Fri Feb 14 18:19:00 1997 Return-Path: Received: from MIT.EDU (SOUTH-STATION-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA26634; Fri, 14 Feb 97 23:19:09 EST Received: from W20-575-4.MIT.EDU by MIT.EDU with SMTP id AA06829; Fri, 14 Feb 97 23:19:08 EST From: tiuzzol@MIT.EDU Received: by w20-575-4.MIT.EDU (5.x/4.7) id AA14458; Fri, 14 Feb 1997 23:19:00 -0500 Date: Fri, 14 Feb 1997 23:19:00 -0500 Message-Id: <9702150419.AA14458@w20-575-4.MIT.EDU> To: 6042-teachers@theory.lcs.mit.edu Subject: rotation schedule *** EOOH *** Return-Path: From: tiuzzol@MIT.EDU Date: Fri, 14 Feb 1997 23:19:00 -0500 To: 6042-teachers@theory.lcs.mit.edu Subject: rotation schedule hey guys...... So I put together a calendar of responsibilities according to the rotation scheme we came up with at the meeting. According to the rotation, Problem set 3: Alex, Daniele Problem set 2 soln's: Alex, Terri Problem set 2 soln's checking: Dave Lecture 5: Terri (this is in /a/class/6.042/spring97/admin/tempstuff/calendar1.ps) However, given how long problem set solutions take, it seems the bulk of the work each week is done by the people doing the solutions and checking them. So I put together a second calendar that rotates by two each week, and has the people checking the problem set doing the lecture notes. That is: Person 1: write soln's Person 2: write soln's Person 3: check pset, do lecture notes Person 4: check pset, do lecture notes Person 5: check soln's This looks like a better balance of work, and people don't get stuck doing problem sets two weeks in a row, but more like every 2 or 3 weeks. According to that one, Problem set 3: Daniele, Dave Problem set 2 soln's: Alex, Terri Problem set 2 soln's checking: Dimitri Lecture 5: Dave (this is in /a/class/6.042/spring97/admin/tempstuff/calendar2.ps) Terri  1,, Mail-from: From karger@theory.lcs.mit.edu Sat Feb 15 15:56:32 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA14242; Sat, 15 Feb 97 20:58:57 EST Received: by ibis (SMI-8.6/TOC-1.2C) id UAA00847; Sat, 15 Feb 1997 20:56:32 -0500 Date: Sat, 15 Feb 1997 20:56:32 -0500 Message-Id: <199702160156.UAA00847@ibis> From: "David R. Karger" To: 6042-forum Subject: [meeroh@MIT.EDU: PS2 correction] *** EOOH *** Return-Path: Date: Sat, 15 Feb 1997 20:56:32 -0500 From: "David R. Karger" To: 6042-forum Subject: [meeroh@MIT.EDU: PS2 correction] A typo has been discovered in problem 8. ------- Start of forwarded message ------- Date: Fri, 14 Feb 1997 20:29:40 -0500 To: karger@lcs.mit.edu From: Miro Jurisic Subject: PS2 correction Problem 8, x(y+z)=xz+yz should be x(y+z)=xy+xz. Hth, meeroh Miroslav Jurisic | meeroh@mit.edu | http://www.mit.edu/people/meeroh/ MIT Information Systems (Mac development) | Athena On-Line Consulting Lt. Commander Meeroh Ambellus, TrekMUSH (ats.trekmush.org:1701) Let's grep the hard disk and see if we can find any hits on "." How do you propose we do that? [...] we dump the entire contents of the hard disk to a Web page, register it with AltaVista, and perform the search. [_d e v e l o p_, Dec 96] ------- End of forwarded message -------  1,, Mail-from: From tiuzzol@MIT.EDU Sat Feb 15 19:24:15 1997 Return-Path: Received: from MIT.EDU (PACIFIC-CARRIER-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA17019; Sun, 16 Feb 97 00:24:15 EST Received: from PUTTANESCA.MIT.EDU by MIT.EDU with SMTP id AA26892; Sun, 16 Feb 97 00:24:15 EST From: tiuzzol@MIT.EDU Received: by puttanesca.MIT.EDU (5.57/4.7) id AA27941; Sun, 16 Feb 97 00:24:15 -0500 Date: Sun, 16 Feb 97 00:24:15 -0500 Message-Id: <9702160524.AA27941@puttanesca.MIT.EDU> To: 6042-forum@theory.lcs.mit.edu Subject: Office hours on Monday *** EOOH *** Return-Path: From: tiuzzol@MIT.EDU Date: Sun, 16 Feb 97 00:24:15 -0500 To: 6042-forum@theory.lcs.mit.edu Subject: Office hours on Monday Since Monday is a holiday and we don't have classes, I'll be holding office hours from 1-4pm in the 3rd floor lounge at NE43 (Tech Square). If the lobby doors are locked, just knock loudly. Terri  1,, Mail-from: From gupta@theory.lcs.mit.edu Sun Feb 16 12:40:12 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA01287; Sun, 16 Feb 97 17:39:40 EST From: gupta@theory.lcs.mit.edu (David Gupta) Received: by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA07988; Sun, 16 Feb 97 17:40:12 EST Date: Sun, 16 Feb 97 17:40:12 EST Message-Id: <199702162240.AA07988@peacock.lcs.mit.edu> To: 6042-forum Subject: office hours on Monday *** EOOH *** Return-Path: From: gupta@theory.lcs.mit.edu (David Gupta) Date: Sun, 16 Feb 97 17:40:12 EST To: 6042-forum Subject: office hours on Monday Hello all, I will be holding office hours 3-5pm Monday in the 3rd floor lounge of NE43. This is an hour earlier than my regular office hours, but still in the same place. David G.  1,, Mail-from: From gupta@theory.lcs.mit.edu Sun Feb 16 12:55:27 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA01560; Sun, 16 Feb 97 17:54:56 EST From: gupta@theory.lcs.mit.edu (David Gupta) Received: by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA08077; Sun, 16 Feb 97 17:55:27 EST Date: Sun, 16 Feb 97 17:55:27 EST Message-Id: <199702162255.AA08077@peacock.lcs.mit.edu> To: 6042-tas Subject: lecture 4 *** EOOH *** Return-Path: From: gupta@theory.lcs.mit.edu (David Gupta) Date: Sun, 16 Feb 97 17:55:27 EST To: 6042-tas Subject: lecture 4 Hi, I've already agreed to do last Thursday's lecture notes. David  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Mon Feb 17 08:56:13 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA25093; Mon, 17 Feb 97 13:55:43 EST Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA10666; Mon, 17 Feb 97 13:56:14 EST Message-Id: <199702171856.AA10666@peacock.lcs.mit.edu> To: 6042-forum Cc: dimitrip Subject: office hours Date: Mon, 17 Feb 97 13:56:13 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-forum Cc: dimitrip Subject: office hours Date: Mon, 17 Feb 97 13:56:13 -0500 From: dimitrip@theory.lcs.mit.edu Hello, Tomorrow is Monday so I will hold office hours from 5 to 7 as announced. Dimitri  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Mon Feb 17 10:00:23 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA26509; Mon, 17 Feb 97 14:59:54 EST Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA11001; Mon, 17 Feb 97 15:00:25 EST Message-Id: <199702172000.AA11001@peacock.lcs.mit.edu> To: 6042-forum Cc: dimitrip Subject: office hours Date: Mon, 17 Feb 97 15:00:23 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-forum Cc: dimitrip Subject: office hours Date: Mon, 17 Feb 97 15:00:23 -0500 From: dimitrip@theory.lcs.mit.edu Hello, OK, I forgot that homework is due tomorrow in tutorials. I will hold office hours tomorrow morning 10-12 in the NE43 3rd floor lounge. Please disregard my previous mail and sorry for the confusion. Dimitri  1,, Mail-from: From alexv@theory.lcs.mit.edu Mon Feb 17 12:43:12 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA00346; Mon, 17 Feb 97 17:41:30 EST From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA01692; Mon, 17 Feb 97 17:43:12 EST Date: Mon, 17 Feb 97 17:43:12 EST Message-Id: <199702172243.AA01692@lark.lcs.mit.edu> To: 6042-tas Subject: Updated list of duties *** EOOH *** Return-Path: From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Date: Mon, 17 Feb 97 17:43:12 EST To: 6042-tas Subject: Updated list of duties Please let me know if this allocation of work is not convenient. -- Alex. Work done so far or Assigned: Problem Set Solutions: Problem Set 1: Terry Problem Set 2: Alex, Daniele Problem Set 3: Daniele, Alex Problem Set 4: Terri, David Problem Set 5: David, Dimitri Problem Set 6: Dimitri, Terri Problem Set 7: Terri, Dimitri Problem Set 8: Dave, Dimitri Problem Set 9: Alex, Daniele Problem Set 10: Daniele, Alex Problem Set 11: David Problem Sets Solutions Checked by: Problem Set 1: Daniele Problem Set 2: David Problem Set 3: Terri Problem Set 4: Dimitri Problem Set 5: Daniele Problem Set 6: Alex Problem Set 7: David Problem Set 8: Alex Problem Set 9: Terri Problem Set 10: Dimiti Problem Set 11: Daniele Lectures: Lect. 1: David Lect. 2: Dimitri Lect. 3: Dimitri Lect. 4: David Lect. 5: Terri Lect. 6: Terri Lect. 7: Alex Lect. 8: David Lect. 9: Daniele Lect. 10: Daniele Lect. 11: Dimitri Lect. 12: David Lect. 13: Alex Lect. 14: David Lect. 15: Alex Lect. 16: Dimitri Lect. 17: Terri Lect. 18: Terri Lect. 19: Daniele Lect. 20: Alex Lect. 21: Daniele Lect. 22: Alex Lect. 23: Daniele Lect. 24: Dimitri Lect. 25: Terri Lect. 26: David  1,, Mail-from: From alexv@theory.lcs.mit.edu Mon Feb 17 12:44:02 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA00365; Mon, 17 Feb 97 17:42:21 EST From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA01695; Mon, 17 Feb 97 17:44:02 EST Date: Mon, 17 Feb 97 17:44:02 EST Message-Id: <199702172244.AA01695@lark.lcs.mit.edu> To: 6042-tas Subject: Reminder *** EOOH *** Return-Path: From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Date: Mon, 17 Feb 97 17:44:02 EST To: 6042-tas Subject: Reminder Work assigned for this week. PS 2 sol.: Alex, Daniele PS 2 sol. rev.: David Lect. 5: Terri  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Wed Feb 19 07:42:58 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA21439; Wed, 19 Feb 97 12:42:30 EST Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA20574; Wed, 19 Feb 97 12:43:00 EST Message-Id: <199702191743.AA20574@peacock.lcs.mit.edu> To: 6042-teachers Subject: grade sheet Date: Wed, 19 Feb 97 12:42:58 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-teachers Subject: grade sheet Date: Wed, 19 Feb 97 12:42:58 -0500 From: dimitrip@theory.lcs.mit.edu Hello, I created an RCS directory in /mit/6.042/spring97 and an xess file called "students.xs" which contains all the student information and columns for the homework to be entered. However, someone must undertake to make the spreadsheet usable. (so that sorting is possible, viewing a students name while entering the grade, etc). Alex I guess it falls to you to find someone without extra responsibilities and assign this job. This task is rather urgent. Dimitri  1,, Mail-from: From miccianc@theory.lcs.mit.edu Wed Feb 19 13:20:12 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA29297; Wed, 19 Feb 97 18:18:30 EST From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA02109; Wed, 19 Feb 97 18:20:12 EST Date: Wed, 19 Feb 97 18:20:12 EST Message-Id: <199702192320.AA02109@lark.lcs.mit.edu> To: 6042-tas Subject: grades *** EOOH *** Return-Path: From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Date: Wed, 19 Feb 97 18:20:12 EST To: 6042-tas Subject: grades I tried to insert the student grades in student.xs but xess says the file is not in xs format. I created a new file called /mit/classes/spring97/grades.xs and inserted most of the student grades (there are about 10 left). I have to leave now, and I won't have time to do that tomorrow morning. So, please somebody else finish the work. I left the problems in david k. office. Daniele.  1,, Mail-from: From miccianc@theory.lcs.mit.edu Wed Feb 19 15:58:40 1997 Return-Path: Received: from ostrich.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA02567; Wed, 19 Feb 97 21:00:37 EST From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Received: by ostrich.lcs.mit.edu (5.65c/TOC-1.2C) id AA12661; Wed, 19 Feb 97 20:58:40 EST Date: Wed, 19 Feb 97 20:58:40 EST Message-Id: <199702200158.AA12661@ostrich.lcs.mit.edu> To: 6042-tas Subject: grades *** EOOH *** Return-Path: From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Date: Wed, 19 Feb 97 20:58:40 EST To: 6042-tas Subject: grades I am not sure how read/write permissions work on athena. If you cannot read/write my grades.xs file on the athena locker, I made a copy in the admin directory. On athena the file is under RCS. Daniele  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Thu Feb 20 11:32:33 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA23256; Thu, 20 Feb 97 16:32:03 EST Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA27514; Thu, 20 Feb 97 16:32:35 EST Message-Id: <199702202132.AA27514@peacock.lcs.mit.edu> To: karger@theory.lcs.mit.edu (David R. Karger) Cc: 6042-tas Subject: Re: grade sheet In-Reply-To: Your message of Wed, 19 Feb 97 12:44:11 -0500. <199702191744.MAA08506@ibis> Date: Thu, 20 Feb 97 16:32:33 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: karger@theory.lcs.mit.edu (David R. Karger) Cc: 6042-tas Subject: Re: grade sheet In-Reply-To: Your message of Wed, 19 Feb 97 12:44:11 -0500. <199702191744.MAA08506@ibis> Date: Thu, 20 Feb 97 16:32:33 -0500 From: dimitrip@theory.lcs.mit.edu The spreadsheet resides only on athena but it can be accessed by a remote machine by telneting into milanese --------------------------------------------------------------------- can the spreadsheet be accessed from here? or do I have to log into athena?  1,, Mail-from: From miccianc@theory.lcs.mit.edu Thu Feb 20 14:45:01 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA27361; Thu, 20 Feb 97 19:43:18 EST From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA02222; Thu, 20 Feb 97 19:45:01 EST Date: Thu, 20 Feb 97 19:45:01 EST Message-Id: <199702210045.AA02222@lark.lcs.mit.edu> To: 6042-teachers *** EOOH *** Return-Path: From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Date: Thu, 20 Feb 97 19:45:01 EST To: 6042-teachers I renamed the student grade spreadsheet to /mit/6.042/spring97/grades.xs3 so xess correctly detects the file type. I locked columns and rows. Now you can scroll problem sets and always have student names always written on the left. To add new columns or edit column titles you need to unlock them from the View menu, and then lock them again to prevent scrolling. The file is under RCS. Dimitri, please make sure graders know how to use RCS. Also tell them that late problem set grades have to be entered 100% and marked as "late" on nearby column. Daniele.  1,, Mail-from: From alexv@theory.lcs.mit.edu Thu Feb 20 16:03:07 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA29116; Thu, 20 Feb 97 21:09:29 EST From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Received: by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA01514; Thu, 20 Feb 97 21:03:07 EST Date: Thu, 20 Feb 97 21:03:07 EST Message-Id: <199702210203.AA01514@phoinix.lcs.mit.edu> To: 6042-tas Subject: Reminder -- Assigned work *** EOOH *** Return-Path: From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Date: Thu, 20 Feb 97 21:03:07 EST To: 6042-tas Subject: Reminder -- Assigned work This is a reminder of the assigned work for next week: Problem Set 3 sol.: Daniele, Alex Problem Set 3 sol. review :Terri Lecture 6: Terri Lecture 7: Alex  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Fri Feb 21 05:07:18 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA11117; Fri, 21 Feb 97 10:06:47 EST Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA01194; Fri, 21 Feb 97 10:07:19 EST Message-Id: <199702211507.AA01194@peacock.lcs.mit.edu> To: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Cc: 6042-teachers, dimitrip In-Reply-To: Your message of Thu, 20 Feb 97 19:45:01 -0500. <199702210045.AA02222@lark.lcs.mit.edu> Date: Fri, 21 Feb 97 10:07:18 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Cc: 6042-teachers, dimitrip In-Reply-To: Your message of Thu, 20 Feb 97 19:45:01 -0500. <199702210045.AA02222@lark.lcs.mit.edu> Date: Fri, 21 Feb 97 10:07:18 -0500 From: dimitrip@theory.lcs.mit.edu Thanks! I don't understand the deal with late problrm sets. What do you mean by 100% ? Why not just enter the grade-20% ? Dimitri ---------------------------------------------------- I renamed the student grade spreadsheet to /mit/6.042/spring97/grades.xs3 so xess correctly detects the file type. I locked columns and rows. Now you can scroll problem sets and always have student names always written on the left. To add new columns or edit column titles you need to unlock them from the View menu, and then lock them again to prevent scrolling. The file is under RCS. Dimitri, please make sure graders know how to use RCS. Also tell them that late problem set grades have to be entered 100% and marked as "late" on nearby column. Daniele.  1,, Mail-from: From karger@theory.lcs.mit.edu Fri Feb 21 05:13:54 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA11351; Fri, 21 Feb 97 10:16:23 EST From: karger@theory.lcs.mit.edu (David R. Karger) Received: by ibis (SMI-8.6/TOC-1.2C) id KAA13151; Fri, 21 Feb 1997 10:13:54 -0500 Date: Fri, 21 Feb 1997 10:13:54 -0500 Message-Id: <199702211513.KAA13151@ibis> To: dimitrip@theory.lcs.mit.edu, miccianc@theory.lcs.mit.edu Subject: late psets Cc: 6042-teachers, dimitrip *** EOOH *** Return-Path: From: karger@theory.lcs.mit.edu (David R. Karger) Date: Fri, 21 Feb 1997 10:13:54 -0500 To: dimitrip@theory.lcs.mit.edu, miccianc@theory.lcs.mit.edu Subject: late psets Cc: 6042-teachers, dimitrip I want to have the original grade plus the late markings because this will give us more info about the students. Someone who is borderline may get more consideration if they tried hard than if they are smart but always late.  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Fri Feb 21 07:10:18 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA14346; Fri, 21 Feb 97 12:09:50 EST Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA01880; Fri, 21 Feb 97 12:10:20 EST Message-Id: <199702211710.AA01880@peacock.lcs.mit.edu> To: 6042-teachers Cc: 6042-secretary Subject: grades/graders Date: Fri, 21 Feb 97 12:10:18 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-teachers Cc: 6042-secretary Subject: grades/graders Date: Fri, 21 Feb 97 12:10:18 -0500 From: dimitrip@theory.lcs.mit.edu I set up the grades file and it's ready to be used by the graders. David, please set permissions for the graders to use it (and no one but the graders and the teachers) and I will inform them about how to use the file and RCS. The graders emails are: lysi@media.mit.edu dmarino@mit.edu etara@mit.edu zia@mit.edu acpatel@mit.edu I created a file named "6042-graders-list" in the admin directory but I don't know how to create an email alias. Can somebody do that please? Dimitri  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Fri Feb 21 07:52:28 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA15385; Fri, 21 Feb 97 12:51:57 EST Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA02254; Fri, 21 Feb 97 12:52:29 EST Message-Id: <199702211752.AA02254@peacock.lcs.mit.edu> To: 6042-students Cc: 6042-teachers Subject: homework Date: Fri, 21 Feb 97 12:52:28 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-students Cc: 6042-teachers Subject: homework Date: Fri, 21 Feb 97 12:52:28 -0500 From: dimitrip@theory.lcs.mit.edu Hello, Starting this comming Tuesday there will be three boxes in the classroom for the purpose of collecting the homework. Please place the homework in the box with the name of your tutorial instructor. Remember to write in the first page of your homework your tutorial time and tutorial instructor's name. Thank you, Dimitri  1,, Mail-from: From tiuzzol@MIT.EDU Fri Feb 21 08:31:24 1997 Return-Path: Received: from MIT.EDU (PACIFIC-CARRIER-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA16143; Fri, 21 Feb 97 13:31:41 EST Received: from PUTTANESCA.MIT.EDU by MIT.EDU with SMTP id AA16359; Fri, 21 Feb 97 13:31:31 EST From: tiuzzol@MIT.EDU Received: by puttanesca.MIT.EDU (5.57/4.7) id AA11660; Fri, 21 Feb 97 13:31:24 -0500 Date: Fri, 21 Feb 97 13:31:24 -0500 Message-Id: <9702211831.AA11660@puttanesca.MIT.EDU> To: 6042-teachers@theory.lcs.mit.edu, dimitrip@theory.lcs.mit.edu Subject: Re: grades/graders Cc: 6042-secretary@theory.lcs.mit.edu *** EOOH *** Return-Path: From: tiuzzol@MIT.EDU Date: Fri, 21 Feb 97 13:31:24 -0500 To: 6042-teachers@theory.lcs.mit.edu, dimitrip@theory.lcs.mit.edu Subject: Re: grades/graders Cc: 6042-secretary@theory.lcs.mit.edu Ok. I moved the stuff into S97/admin (in case we either need to, for whatever reason, leave things for 6.042 students, and also so that administrative stuff is down a level, and they don't realize the grades are being stored on athena.) I've added the graders to the 6.042 list. This gives them permissions for the whole locker. Probablly not the right thign to do, but I'll change it later if needed. Terri  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Fri Feb 21 08:37:13 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA16231; Fri, 21 Feb 97 13:36:42 EST Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA02461; Fri, 21 Feb 97 13:37:14 EST Message-Id: <199702211837.AA02461@peacock.lcs.mit.edu> To: 6042-forum Cc: 6042-teachers Subject: homework Date: Fri, 21 Feb 97 13:37:13 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-forum Cc: 6042-teachers Subject: homework Date: Fri, 21 Feb 97 13:37:13 -0500 From: dimitrip@theory.lcs.mit.edu Hello, Starting this comming Tuesday there will be three boxes in the classroom for the purpose of collecting the homework. Please place the homework in the box with the name of your tutorial instructor. Remember to write in the first page of your homework your tutorial time and tutorial instructor's name. Thank you, Dimitri  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Fri Feb 21 08:53:05 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA16709; Fri, 21 Feb 97 13:52:45 EST Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA02528; Fri, 21 Feb 97 13:53:16 EST Message-Id: <199702211853.AA02528@peacock.lcs.mit.edu> To: lysi@media.mit.edu, dmarino@mit.edu, etara@mit.edu, zia@mit.edu, acpatel@mit.edu Cc: 6042-teachers Subject: grades Date: Fri, 21 Feb 97 13:53:05 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: lysi@media.mit.edu, dmarino@mit.edu, etara@mit.edu, zia@mit.edu, acpatel@mit.edu Cc: 6042-teachers Subject: grades Date: Fri, 21 Feb 97 13:53:05 -0500 From: dimitrip@theory.lcs.mit.edu Hello, There is a 6.042 locker in athena. The file with the grades is in /mit/6.042/spring97/admin/grades.xs3 Use xess3 to enter the grades in the file. Since it's not desirable that two persons use the file at the same time we set up an RCS directory. Here's how it works. When you want to enter grades lock the file with the command: co -l grades.xs3 Nobody will be able to write on the file untill you unlock it. When you are done unlock the file with: ci -u grades.xs3 When you do this a ">>" prompt appears. You can add some comments if you have any. Terminate by a single "." in a line by itself. Returning the graded homeworks is very time sensitive (they must be in pr. Karger's office the latest by 11am on Monday), but entering the grades isn't. Even so, please don't delay entering the grades by more than a week. Please email me if you have any questions. Thanks, Dimitri  1,, Mail-from: From karger@theory.lcs.mit.edu Sat Feb 22 19:44:16 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA09965; Sun, 23 Feb 97 00:46:46 EST From: karger@theory.lcs.mit.edu (David R. Karger) Received: by ibis (SMI-8.6/TOC-1.2C) id AAA24107; Sun, 23 Feb 1997 00:44:16 -0500 Date: Sun, 23 Feb 1997 00:44:16 -0500 Message-Id: <199702230544.AAA24107@ibis> To: 6042-forum@theory.lcs.mit.edu Subject: pset 3 notes *** EOOH *** Return-Path: From: karger@theory.lcs.mit.edu (David R. Karger) Date: Sun, 23 Feb 1997 00:44:16 -0500 To: 6042-forum@theory.lcs.mit.edu Subject: pset 3 notes A couple of notes on problem set 3: 1) for the string proof, you may assume the following axioms: v.lambda = v = lambda.v (Rosen is sloppy about not stating this explicityl) 2) in the optional question, the ! is a factorial, not a typo. c6042 graders  1,, Mail-from: From jocave@MIT.EDU Sun Feb 23 21:40:40 1997 Return-Path: Received: from MIT.EDU (SOUTH-STATION-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA24919; Mon, 24 Feb 97 02:40:47 EST Received: from MIT.MIT.EDU by MIT.EDU with SMTP id AA10167; Mon, 24 Feb 97 02:40:47 EST Received: from MENTAL-PYGMIE.MIT.EDU by MIT.MIT.EDU (5.61/4.7) id AA22004; Mon, 24 Feb 97 02:40:46 EST Message-Id: <3.0.1.16.19970224024040.75af406e@po7.mit.edu> X-Sender: jocave@po7.mit.edu X-Mailer: Windows Eudora Pro Version 3.0.1 (16) Date: Mon, 24 Feb 1997 02:40:40 -0500 To: karger@theory.lcs.mit.edu From: Justin Cave Subject: Problem Set 3 distribution Cc: 6042-tas@theory.lcs.mit.edu Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" *** EOOH *** Return-Path: X-Sender: jocave@po7.mit.edu X-Mailer: Windows Eudora Pro Version 3.0.1 (16) Date: Mon, 24 Feb 1997 02:40:40 -0500 To: karger@theory.lcs.mit.edu From: Justin Cave Subject: Problem Set 3 distribution Cc: 6042-tas@theory.lcs.mit.edu Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" I am writing to express some concerns I have with the distribution of problem set 3. First, some concerns on when problem sets are distributed. Most of my classes have assignments due on Mondays and Tuesdays. Thus, for the first two problem sets, I've been able to spend Tuesday and Wednesday evenings working on 6.042 and still have some time over the weekend to work on my UROP. I'd hate to lose that time in the future. Second, some logistical concerns. On Thursday, there weren't enough copies for everyone. This shouldn't be a problem, since the course home page distributes them as well. Unfortunately, as of 2AM Monday, there is no PS3. If the course home page is supposed to be a legitimate avenue of distribution, it needs to be updated regularly. If we are not supposed to rely on the home page, that needs to be made clear. Between myself and three friends in this class, there was just one copy of the problem set until this evening. Unfortunately, the one person who had it didn't realize there was a shortage and didn't make photocopies until this evening, leaving the rest of us less than two days to do the problem set. I hope this situation will not repeat itself. I apologize if this message sounds like a flame-- that is not my intention. I understand that running a class is difficult and time consuming. I appreciate your efforts. I know you want to make this class successful and I hope my feedback will help you accomplish that goal. Thank you very much, ------------------------------------------------------------- Justin Cave 290 Massachusetts Ave jocave@mit.edu Cambridge, MA 02139 http://mental-pygmie.mit.edu (617)225-9132  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Tue Feb 25 12:11:47 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA15949; Tue, 25 Feb 97 17:11:18 EST Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA21522; Tue, 25 Feb 97 17:11:49 EST Message-Id: <199702252211.AA21522@peacock.lcs.mit.edu> To: karger Cc: 6042-tas Subject: problem set 1 monks Date: Tue, 25 Feb 97 17:11:47 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: karger Cc: 6042-tas Subject: problem set 1 monks Date: Tue, 25 Feb 97 17:11:47 -0500 From: dimitrip@theory.lcs.mit.edu Hello, Was the monk problem for credit? It may be the case that the graders did not grade uniformly. Dimitri ------------------------------------------------------------------ Oh. So it counts for... nothing. Oops =) Thanx, tho, I'll still try to get those 3 pts on x = y => x' = y' =) meeroh PS. I am pretty sure the grader counted the optional problem towards the total score for at least one person in our section... you might have to talk to the grader about that. Miroslav Jurisic | meeroh@mit.edu | http://www.mit.edu/people/meeroh/ MIT Information Systems (Mac development) | Athena On-Line Consulting Lt. Commander Meeroh Ambellus, TrekMUSH (ats.trekmush.org:1701) Let's grep the hard disk and see if we can find any hits on "." How do you propose we do that? [...] we dump the entire contents of the hard disk to a Web page, register it with AltaVista, and perform the search. [_d e v e l o p_, Dec 96] ------- End of Forwarded Message  1,, Mail-from: From tiuzzol@MIT.EDU Tue Feb 25 12:13:29 1997 Return-Path: Received: from MIT.EDU (SOUTH-STATION-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA16113; Tue, 25 Feb 97 17:13:32 EST Received: from RINGWORLD.MIT.EDU by MIT.EDU with SMTP id AA07453; Tue, 25 Feb 97 17:13:31 EST Received: (from tiuzzol@localhost) by ringworld.MIT.EDU (8.6.11/8.6.11) id RAA03153; Tue, 25 Feb 1997 17:13:29 -0500 Date: Tue, 25 Feb 1997 17:13:29 -0500 From: Terri Iuzzolino Message-Id: <199702252213.RAA03153@ringworld.MIT.EDU> To: dimitrip@theory.lcs.mit.edu, karger@theory.lcs.mit.edu Subject: Re: problem set 1 monks Cc: 6042-tas@theory.lcs.mit.edu *** EOOH *** Return-Path: Date: Tue, 25 Feb 1997 17:13:29 -0500 From: Terri Iuzzolino To: dimitrip@theory.lcs.mit.edu, karger@theory.lcs.mit.edu Subject: Re: problem set 1 monks Cc: 6042-tas@theory.lcs.mit.edu yes. That is the case. Half of mine came back out of 80 and half out of 90. While we're discussing grading and graders..... has someone let the graders know that they *MUST* put comments on the papers rather than just taking off points? I've gotten a lot of complaints about that. Terri  1,, Mail-from: From gupta@theory.lcs.mit.edu Tue Feb 25 17:35:25 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA25947; Tue, 25 Feb 97 22:34:53 EST From: gupta@theory.lcs.mit.edu (David Gupta) Received: by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA23003; Tue, 25 Feb 97 22:35:25 EST Date: Tue, 25 Feb 97 22:35:25 EST Message-Id: <199702260335.AA23003@peacock.lcs.mit.edu> To: djlisk@mit.edu Cc: 6042-tas *** EOOH *** Return-Path: From: gupta@theory.lcs.mit.edu (David Gupta) Date: Tue, 25 Feb 97 22:35:25 EST To: djlisk@mit.edu Cc: 6042-tas Hi, I will take your word for it that you had the problem set finished last week and not consider it late. David G.  1,, Mail-from: From gupta@theory.lcs.mit.edu Tue Feb 25 17:59:22 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA26229; Tue, 25 Feb 97 22:58:50 EST From: gupta@theory.lcs.mit.edu (David Gupta) Received: by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA23075; Tue, 25 Feb 97 22:59:22 EST Date: Tue, 25 Feb 97 22:59:22 EST Message-Id: <199702260359.AA23075@peacock.lcs.mit.edu> To: 6042-forum Subject: reminder of course policy on late homework *** EOOH *** Return-Path: From: gupta@theory.lcs.mit.edu (David Gupta) Date: Tue, 25 Feb 97 22:59:22 EST To: 6042-forum Subject: reminder of course policy on late homework Hello all, The policy for late homework is described in the Course Information handout that was distributed on the first day of class and is available from the course home page. You are responsible for familiarizing yourself with course policy as described in this handout. Problem sets are to be turned in before class starts. The course staff reserves the right to mark any homework turned in after class begins as late. This will reduce the grade on that assignment by 20%. Usually, we allow a short grace period before we begin to mark homework problems late, but you should not count on this. The official time when homework is due may change to 5 minutes after class begins (or something like this) if logistics end up requiring this, but the late policy will remain the same. David G.  1,, Mail-from: From miccianc@theory.lcs.mit.edu Tue Feb 25 19:10:45 1997 Return-Path: Received: from ostrich.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA27315; Wed, 26 Feb 97 00:12:54 EST From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Received: by ostrich.lcs.mit.edu (5.65c/TOC-1.2C) id AA21750; Wed, 26 Feb 97 00:10:45 EST Date: Wed, 26 Feb 97 00:10:45 EST Message-Id: <199702260510.AA21750@ostrich.lcs.mit.edu> To: 6042-tas Subject: ps3 solutions Cc: karger *** EOOH *** Return-Path: From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Date: Wed, 26 Feb 97 00:10:45 EST To: 6042-tas Subject: ps3 solutions Cc: karger Problem set 3 solutions are ready for revision in the handout directory. I couldn't change handout-numbers.tex because the file is currently locked by karger. Daniele.  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Wed Feb 26 05:22:11 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA07029; Wed, 26 Feb 97 10:21:40 EST Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA25301; Wed, 26 Feb 97 10:22:12 EST Message-Id: <199702261522.AA25301@peacock.lcs.mit.edu> To: 6042-teachers Subject: ps1 Date: Wed, 26 Feb 97 10:22:11 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-teachers Subject: ps1 Date: Wed, 26 Feb 97 10:22:11 -0500 From: dimitrip@theory.lcs.mit.edu We have a situation here. Some graders gave credit for the optional problem and some didn't. We must resolve it soon or we will be drowned in complaints. I can only come up with the fllowing suggestions: 1) Let all the students who did not receive credit have the homeworks regraded. -This solution will generate complaints from those who didn't do the problem at all. 2) Ask the students who got credit for the problem to have it regraded (marked down) - Not a very fair solution but we appeal to their consience. 3) Give everyody a 10 for the last problem weather they did it or not. -Probably the best solution, especially if we let the graders handle the regrading. Dimitri  1,, Mail-from: From karger@theory.lcs.mit.edu Wed Feb 26 05:40:21 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA07750; Wed, 26 Feb 97 10:42:54 EST Received: by ibis (SMI-8.6/TOC-1.2C) id KAA02072; Wed, 26 Feb 1997 10:40:21 -0500 Date: Wed, 26 Feb 1997 10:40:21 -0500 Message-Id: <199702261540.KAA02072@ibis> From: "David R. Karger" To: 6042-forum@theory.lcs.mit.edu, gupta, miccianc, dimitrip, alexv, tiuzzol@mit.edu, etara@mit.edu, dmarino@mit.edu, acpatel@mit.edu, zia@mit.edu, lysi@mit.edu Subject: optional problems *** EOOH *** Return-Path: Date: Wed, 26 Feb 1997 10:40:21 -0500 From: "David R. Karger" To: 6042-forum@theory.lcs.mit.edu, gupta, miccianc, dimitrip, alexv, tiuzzol@mit.edu, etara@mit.edu, dmarino@mit.edu, acpatel@mit.edu, zia@mit.edu, lysi@mit.edu Subject: optional problems There has been some confusion regarding optional problems. This note is to unconfuse you. Optional problems are _not_ required problems. You can get an A without doing any of them. They are there for three relatively unimportant reasons: 1) some of you might enjoy the challenege 2) they may make a difference if all else is completely in balance 3) doing well on them is a good way to catch stand out in the crowded class, which may be useful for future recommendation writing, etc.  1,, Mail-from: From miccianc@theory.lcs.mit.edu Wed Feb 26 06:03:15 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA08354; Wed, 26 Feb 97 11:01:29 EST From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA02937; Wed, 26 Feb 97 11:03:15 EST Date: Wed, 26 Feb 97 11:03:15 EST Message-Id: <199702261603.AA02937@lark.lcs.mit.edu> To: 6042-teachers Subject: handout numbers *** EOOH *** Return-Path: From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Date: Wed, 26 Feb 97 11:03:15 EST To: 6042-teachers Subject: handout numbers This is a reminder for everyboby. Problem set 4 was handed out with the wrong handout number. When you put a new file in the handout directory always make sure that handout-numbers.tex has the right handout number. Remember to co/ci the file when you modify it. Daniele.  1,, Mail-from: From tiuzzol@MIT.EDU Wed Feb 26 06:54:02 1997 Return-Path: Received: from MIT.EDU (SOUTH-STATION-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA10703; Wed, 26 Feb 97 11:54:05 EST Received: from W20-575-1.MIT.EDU by MIT.EDU with SMTP id AA25358; Wed, 26 Feb 97 11:54:05 EST From: tiuzzol@MIT.EDU Received: by w20-575-1.MIT.EDU (5.x/4.7) id AA04013; Wed, 26 Feb 1997 11:54:02 -0500 Date: Wed, 26 Feb 1997 11:54:02 -0500 Message-Id: <9702261654.AA04013@w20-575-1.MIT.EDU> Content-Type: text Apparently-To: 6042-tas@theory.lcs.mit.edu *** EOOH *** Return-Path: From: tiuzzol@MIT.EDU Date: Wed, 26 Feb 1997 11:54:02 -0500 Content-Type: text PS4 Thanks to whoever put PS4 on the web. Terri  1,, Mail-from: From miccianc@theory.lcs.mit.edu Wed Feb 26 07:52:49 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA13874; Wed, 26 Feb 97 12:51:04 EST From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA02964; Wed, 26 Feb 97 12:52:49 EST Date: Wed, 26 Feb 97 12:52:49 EST Message-Id: <199702261752.AA02964@lark.lcs.mit.edu> To: 6042-forum Subject: test message *** EOOH *** Return-Path: From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Date: Wed, 26 Feb 97 12:52:49 EST To: 6042-forum Subject: test message This is a test message. All 6.042 students should receive it. Sorry if you receive it more than once. If you know of any student that did not receive it please send email to miccianc@theory.lcs.mit.edu. Otherwise, just ignore it (you do NOT have to acknowledge this message). Daniele  1,, Mail-from: From gupta@theory.lcs.mit.edu Wed Feb 26 10:28:31 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA22622; Wed, 26 Feb 97 15:27:59 EST From: gupta@theory.lcs.mit.edu (David Gupta) Received: by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA27126; Wed, 26 Feb 97 15:28:31 EST Date: Wed, 26 Feb 97 15:28:31 EST Message-Id: <199702262028.AA27126@peacock.lcs.mit.edu> To: gqsmoov@mit.edu Subject: tutorials Cc: 6042-tas *** EOOH *** Return-Path: From: gupta@theory.lcs.mit.edu (David Gupta) Date: Wed, 26 Feb 97 15:28:31 EST To: gqsmoov@mit.edu Subject: tutorials Cc: 6042-tas Hi, You have until the end of this week to work the tutorial problems in the office hours of any TA. This is not making up for an absence from tutorials but is your assignment due to your schedule conflicts. Dimitri was not aware that you were instructed to do this. If you are changing your schedule and wish to be assigned to one of Terri's tutorials sections, you should send e-mail to 6042-headta@theory.lcs.mit.edu and request to be assigned to a particular one of her tutorial sections. If you then get assigned to that section, you will be required to attend that and will no longer be given special permission to work problems in office hours for tutorials after the day you are given a tutorial assignment. David G.  1,, Mail-from: From miccianc@theory.lcs.mit.edu Fri Feb 28 07:56:16 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA17808; Fri, 28 Feb 97 12:54:28 EST From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA03423; Fri, 28 Feb 97 12:56:16 EST Date: Fri, 28 Feb 97 12:56:16 EST Message-Id: <199702281756.AA03423@lark.lcs.mit.edu> To: 6042-tas *** EOOH *** Return-Path: From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Date: Fri, 28 Feb 97 12:56:16 EST To: 6042-tas as usual the xerox machine jammed while making copies of the handouts. I can't make it on time for recitation. If any of you can make it, please make copies of H09-Sol3 (I have already 50 of them) and H07-Sol2 and bring them to Alex and me in 24-115 and 36-156 some time before 2pm. You can find them on the webpage or handout directory. A printed copy is also on my desk. Otherwise, never mind. Solutions are on the webpage and we can tell students to print them out themselves. Daniele.  1,, Mail-from: From tiuzzol@MIT.EDU Fri Feb 28 08:24:03 1997 Return-Path: Received: from MIT.EDU (PACIFIC-CARRIER-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA18537; Fri, 28 Feb 97 13:24:08 EST Received: from RINGWORLD.MIT.EDU by MIT.EDU with SMTP id AA04506; Fri, 28 Feb 97 13:24:06 EST Received: (from tiuzzol@localhost) by ringworld.MIT.EDU (8.6.11/8.6.11) id NAA17894; Fri, 28 Feb 1997 13:24:03 -0500 Date: Fri, 28 Feb 1997 13:24:03 -0500 From: Terri Iuzzolino Message-Id: <199702281824.NAA17894@ringworld.MIT.EDU> To: 6042-tas@theory.lcs.mit.edu, miccianc@theory.lcs.mit.edu Subject: Copies *** EOOH *** Return-Path: Date: Fri, 28 Feb 1997 13:24:03 -0500 From: Terri Iuzzolino To: 6042-tas@theory.lcs.mit.edu, miccianc@theory.lcs.mit.edu Subject: Copies hey. ok... it's about 1:22. I'm going to be on 7ai or 3ai photocopying stuff....... (kjjust to let people know) if you want to take over a second copier, find me.  1,, Mail-from: From tiuzzol@theory.lcs.mit.edu Sun Mar 2 07:55:52 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA21833; Sun, 02 Mar 97 12:55:19 EST From: tiuzzol@theory.lcs.mit.edu (Terri Iuzzolino) Received: by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA14889; Sun, 02 Mar 97 12:55:52 EST Date: Sun, 02 Mar 97 12:55:52 EST Message-Id: <199703021755.AA14889@peacock.lcs.mit.edu> To: 6042-teachers Subject: RCS and the admin/students file *** EOOH *** Return-Path: From: tiuzzol@theory.lcs.mit.edu (Terri Iuzzolino) Date: Sun, 02 Mar 97 12:55:52 EST To: 6042-teachers Subject: RCS and the admin/students file Hey guys. I've been having a lot of problems checking things in and out with RCS. Right now, I can't check the admin/students file back in. i've copied the latest version with my modifications to admin/students.terrimod, but if the next person who comes along to check out the file (or in for that matter) could be careful to make sure my modifications are still there, I'd appreciate it. Terri  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Sun Mar 2 08:26:57 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA22124; Sun, 02 Mar 97 13:26:26 EST Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA15154; Sun, 02 Mar 97 13:26:58 EST Message-Id: <199703021826.AA15154@peacock.lcs.mit.edu> To: tiuzzol@theory.lcs.mit.edu (Terri Iuzzolino) Cc: 6042-teachers, dimitrip Subject: Re: RCS and the admin/students file In-Reply-To: Your message of Sun, 02 Mar 97 12:55:52 -0500. <199703021755.AA14889@peacock.lcs.mit.edu> Date: Sun, 02 Mar 97 13:26:57 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: tiuzzol@theory.lcs.mit.edu (Terri Iuzzolino) Cc: 6042-teachers, dimitrip Subject: Re: RCS and the admin/students file In-Reply-To: Your message of Sun, 02 Mar 97 12:55:52 -0500. <199703021755.AA14889@peacock.lcs.mit.edu> Date: Sun, 02 Mar 97 13:26:57 -0500 From: dimitrip@theory.lcs.mit.edu OK, I checked in the students file and made sure that your modifications are included. Thanks a lot for making the modifications! Dimitri --------------------------------------------------------- Hey guys. I've been having a lot of problems checking things in and out with RCS. Right now, I can't check the admin/students file back in. i've copied the latest version with my modifications to admin/students.terrimod, but if the next person who comes along to check out the file (or in for that matter) could be careful to make sure my modifications are still there, I'd appreciate it. Terri  1,, Mail-from: From karger@theory.lcs.mit.edu Sun Mar 2 11:15:24 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA24175; Sun, 02 Mar 97 16:18:01 EST Received: by ibis (SMI-8.6/TOC-1.2C) id QAA11458; Sun, 2 Mar 1997 16:15:24 -0500 Date: Sun, 2 Mar 1997 16:15:24 -0500 Message-Id: <199703022115.QAA11458@ibis> From: "David R. Karger" To: miccianc@theory.lcs.mit.edu Cc: 6042-teachers In-Reply-To: <199702261603.AA02937@lark.lcs.mit.edu> (miccianc@theory.lcs.mit.edu) Subject: Re: handout numbers *** EOOH *** Return-Path: Date: Sun, 2 Mar 1997 16:15:24 -0500 From: "David R. Karger" To: miccianc@theory.lcs.mit.edu Cc: 6042-teachers In-Reply-To: <199702261603.AA02937@lark.lcs.mit.edu> (miccianc@theory.lcs.mit.edu) Subject: Re: handout numbers Whoever was resonsible for pset 4, please fix the handout number on the version being webbed.  1,, Mail-from: From gupta@theory.lcs.mit.edu Sun Mar 2 12:58:05 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA25526; Sun, 02 Mar 97 17:57:33 EST From: gupta@theory.lcs.mit.edu (David Gupta) Received: by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA16503; Sun, 02 Mar 97 17:58:05 EST Date: Sun, 02 Mar 97 17:58:05 EST Message-Id: <199703022258.AA16503@peacock.lcs.mit.edu> To: 6042-teachers Subject: forwarded message *** EOOH *** Return-Path: From: gupta@theory.lcs.mit.edu (David Gupta) Date: Sun, 02 Mar 97 17:58:05 EST To: 6042-teachers Subject: forwarded message Hi, David asked me to forward this to the recitation instructors. Whoever is doing the notes for last Thursday's lecture might also want to have a look. One comment I forgot to include: I believe the term "relatively prime" was used without being defined. David _______________________________________________________________________________ Hi, I'll start the list over again. You said natural numbers instead of integers when talking about being able to write gcd(x,y) as ax+by. In one case, you defended a step *inside* the inductive proof (at the end of the inductive step but before actually concluding the overall statement) by saying it was true "by induction". I'm not even sure what you meant was "by the inductive hypothesis." Even if it was a simple mistake like that, I'd be worried that they might start thinking that the inductive hypothesis wasn't being assumed but taken to have been proven "by induction" from past work. That's a really bad way of looking at induction. For the multiplication algorithm, you stated that the arguments were fixed and that you therefore could not do induction on them. Of course, we have frequently done induction on quantities that seemed just as fixed. I'm still not persuaded that you could not finesse an inductive proof on an argument with suitable indexing and an appropriate interpretation of a for loop. (This doesn't matter, of course). In the same problem you are inconsistent in your use of "k". You should always reserve k for the value of that variable at some specific point in the program. You should have a distinct variable name (as opposed to a program variable) on which to do induction. Lastly, and most picky of all, I would like us to be consistent and always make the inductive step assume P(n) as opposed to P(n-1). Of course the two are equivalent, but students will be prone to get the ranges wrong so they should at least be consistent about which one they do. Also, the range in the former case is the same one over which you're doing induction. So they would be (I hope) more likely to get it right that way. David  1,, Mail-from: From miccianc@theory.lcs.mit.edu Wed Mar 5 06:06:22 1997 Return-Path: Received: from ostrich.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA08422; Wed, 05 Mar 97 11:16:47 EST From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Received: by ostrich.lcs.mit.edu (5.65c/TOC-1.2C) id AA07614; Wed, 05 Mar 97 11:06:22 EST Date: Wed, 05 Mar 97 11:06:22 EST Message-Id: <199703051606.AA07614@ostrich.lcs.mit.edu> To: 6042-teachers Subject: class yesterday *** EOOH *** Return-Path: From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Date: Wed, 05 Mar 97 11:06:22 EST To: 6042-teachers Subject: class yesterday Some of you were worried by yesterday's class. This is to reassure you. That lecture was the culmination of the first part of the course, dealing with induction and algorithms. We won't be building on it further. Instead, we'll be starting a new topic next time. (Those who want to read ahead might want to start looking at Rosen, Chapter 6). David Karger  1,, Mail-from: From gupta@theory.lcs.mit.edu Thu Mar 6 07:23:07 1997 Return-Path: Received: from emu.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA19070; Thu, 06 Mar 97 12:24:43 EST From: gupta@theory.lcs.mit.edu (David Gupta) Received: by emu.lcs.mit.edu (5.65c/TOC-1.2C) id AA02528; Thu, 06 Mar 97 12:23:07 EST Date: Thu, 06 Mar 97 12:23:07 EST Message-Id: <199703061723.AA02528@emu.lcs.mit.edu> To: 6042-forum Subject: correction to ps5 *** EOOH *** Return-Path: From: gupta@theory.lcs.mit.edu (David Gupta) Date: Thu, 06 Mar 97 12:23:07 EST To: 6042-forum Subject: correction to ps5 Hello all, In problem 8, the precondition for give-cent should also require that total - total' be greater than 0, as well as less than 10. David G.  1,, Mail-from: From karger@theory.lcs.mit.edu Thu Mar 6 12:56:33 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA28743; Thu, 06 Mar 97 17:59:12 EST From: karger@theory.lcs.mit.edu (David R. Karger) Received: by ibis (SMI-8.6/TOC-1.2C) id RAA20128; Thu, 6 Mar 1997 17:56:33 -0500 Date: Thu, 6 Mar 1997 17:56:33 -0500 Message-Id: <199703062256.RAA20128@ibis> To: 6042-forum@theory.lcs.mit.edu Subject: problem set bug *** EOOH *** Return-Path: From: karger@theory.lcs.mit.edu (David R. Karger) Date: Thu, 6 Mar 1997 17:56:33 -0500 To: 6042-forum@theory.lcs.mit.edu Subject: problem set bug in the optional "Bump" problem, the question should be "what happens if Bump(0) is called n times.  1,, Mail-from: From karger@theory.lcs.mit.edu Thu Mar 6 13:03:16 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA28873; Thu, 06 Mar 97 18:05:55 EST From: karger@theory.lcs.mit.edu (David R. Karger) Received: by ibis (SMI-8.6/TOC-1.2C) id SAA20137; Thu, 6 Mar 1997 18:03:16 -0500 Date: Thu, 6 Mar 1997 18:03:16 -0500 Message-Id: <199703062303.SAA20137@ibis> To: 6042-forum@theory.lcs.mit.edu Subject: pset bug *** EOOH *** Return-Path: From: karger@theory.lcs.mit.edu (David R. Karger) Date: Thu, 6 Mar 1997 18:03:16 -0500 To: 6042-forum@theory.lcs.mit.edu Subject: pset bug In problem 5, the initializations should be Fprev = 0 Fnext = 1  1,, Mail-from: From karger@theory.lcs.mit.edu Thu Mar 6 13:25:48 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA29305; Thu, 06 Mar 97 18:28:27 EST From: karger@theory.lcs.mit.edu (David R. Karger) Received: by ibis (SMI-8.6/TOC-1.2C) id SAA20174; Thu, 6 Mar 1997 18:25:48 -0500 Date: Thu, 6 Mar 1997 18:25:48 -0500 Message-Id: <199703062325.SAA20174@ibis> To: 6042-forum Subject: office hours *** EOOH *** Return-Path: From: karger@theory.lcs.mit.edu (David R. Karger) Date: Thu, 6 Mar 1997 18:25:48 -0500 To: 6042-forum Subject: office hours My office hours will be moved this week. instead of tomorrow, they will be Monday 1:30-3.  1,, Mail-from: From gupta@theory.lcs.mit.edu Thu Mar 6 13:35:17 1997 Return-Path: Received: from whippoorwill.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA29449; Thu, 06 Mar 97 18:33:51 EST From: gupta@theory.lcs.mit.edu (David Gupta) Received: by whippoorwill.lcs.mit.edu (5.65c/TOC-1.2C) id AA04182; Thu, 06 Mar 97 18:35:17 EST Date: Thu, 06 Mar 97 18:35:17 EST Message-Id: <199703062335.AA04182@whippoorwill.lcs.mit.edu> To: 6042-forum Subject: office hours *** EOOH *** Return-Path: From: gupta@theory.lcs.mit.edu (David Gupta) Date: Thu, 06 Mar 97 18:35:17 EST To: 6042-forum Subject: office hours Hello all, I am moving my office hours for next week to tomorrow (Friday) from 3-5pm in the third floor lounge of LCS (NE43). David G.  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Fri Mar 7 06:24:03 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA13972; Fri, 07 Mar 97 11:30:36 EST Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA02575; Fri, 07 Mar 97 11:24:05 EST Message-Id: <199703071624.AA02575@phoinix.lcs.mit.edu> To: karger Cc: 6042-tas Subject: antisymmetric Date: Fri, 07 Mar 97 11:24:03 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: karger Cc: 6042-tas Subject: antisymmetric Date: Fri, 07 Mar 97 11:24:03 -0500 From: dimitrip@theory.lcs.mit.edu Hello, I remembered that there is a discrepancy between the definition of antisymmetry that you gave in lecture and the one that's in the notes. In lecture, you defined a relation to be antisymmetic if (a,b) in R implies (b,a) not in R This implies that (a,a) cannot be in R. In the draft of the notes that I saw yesterday, a relation is defined to be antisymmetric if (a,b) in R and (b,a) in R, imply that a = b, which allows (a,a) to be in R. Which one are we going to keep? Dimitri  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Fri Mar 7 07:17:09 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA15569; Fri, 07 Mar 97 12:23:42 EST Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA02652; Fri, 07 Mar 97 12:17:11 EST Message-Id: <199703071717.AA02652@phoinix.lcs.mit.edu> To: 6042-tas Subject: head TA Date: Fri, 07 Mar 97 12:17:09 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-tas Subject: head TA Date: Fri, 07 Mar 97 12:17:09 -0500 From: dimitrip@theory.lcs.mit.edu Hello, Please volunteer for the head TA job. I kept this job for too long, which means that each of you will have to do it for only a couple of weeks. There are not any reassignments left and the only head TA job that remains is to scedule a conflict exam. I don't want to choose any of you myself but of course I don't plan to stay with the job either. Thank you, Dimitri  1,, Mail-from: From alexv@theory.lcs.mit.edu Fri Mar 7 19:46:33 1997 Return-Path: Received: from whimbrel.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA28858; Sat, 08 Mar 97 00:44:46 EST From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Received: by whimbrel.lcs.mit.edu (5.65c/TOC-1.2C) id AA10318; Sat, 08 Mar 97 00:46:33 EST Date: Sat, 08 Mar 97 00:46:33 EST Message-Id: <199703080546.AA10318@whimbrel.lcs.mit.edu> To: 6042-forum@theory.lcs.mit.edu Subject: PS #4 *** EOOH *** Return-Path: From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Date: Sat, 08 Mar 97 00:46:33 EST To: 6042-forum@theory.lcs.mit.edu Subject: PS #4 Lecture notes 6, 7 and Handout 11 are on the web. (http://theory.lcs.mit.edu/classes/6.042) They are relevant to this week's problem set. Alex.  1,, Mail-from: From alexv@theory.lcs.mit.edu Fri Mar 7 19:52:31 1997 Return-Path: Received: from whimbrel.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA28983; Sat, 08 Mar 97 00:50:45 EST From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Received: by whimbrel.lcs.mit.edu (5.65c/TOC-1.2C) id AA10330; Sat, 08 Mar 97 00:52:31 EST Date: Sat, 08 Mar 97 00:52:31 EST Message-Id: <199703080552.AA10330@whimbrel.lcs.mit.edu> To: 6042-forum@theory.lcs.mit.edu Subject: PS #5 *** EOOH *** Return-Path: From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Date: Sat, 08 Mar 97 00:52:31 EST To: 6042-forum@theory.lcs.mit.edu Subject: PS #5 Lecture notes 6, 7 and Handout 11 are on the web. (http://theory.lcs.mit.edu/classes/6.042) They are relevant to this week's problem set. Alex.  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Sat Mar 8 08:31:26 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA07723; Sat, 08 Mar 97 13:37:59 EST Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA04109; Sat, 08 Mar 97 13:31:27 EST Message-Id: <199703081831.AA04109@phoinix.lcs.mit.edu> To: 6042-teachers Subject: head TA Date: Sat, 08 Mar 97 13:31:26 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-teachers Subject: head TA Date: Sat, 08 Mar 97 13:31:26 -0500 From: dimitrip@theory.lcs.mit.edu Hello, I have asked the other TAs to volunteer for the head TA position but I got no replies. In the meantime I am receiving head TA mail that I don't want to deal with. I hate to choose one of the other TAs but I am forced to do something. I decided to assign the head TA possition in a sequence so that it becomes clear that everybody has to do it. To get the sequence I wrote your names in pieces of paper and asked an office mate to pick one at a time. If you don't like the assignment sequence you work out another sequence. Daniele David Alex Terri I am sorry I had to resort to this but I don't see what else I could do. Dimitri  1,, Mail-from: From karger@theory.lcs.mit.edu Sun Mar 9 16:40:42 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA29679; Sun, 09 Mar 97 21:43:24 EST Received: by ibis (SMI-8.6/TOC-1.2C) id VAA25026; Sun, 9 Mar 1997 21:40:42 -0500 Date: Sun, 9 Mar 1997 21:40:42 -0500 Message-Id: <199703100240.VAA25026@ibis> From: "David R. Karger" To: dimitrip@theory.lcs.mit.edu Cc: 6042-teachers In-Reply-To: <199703081831.AA04109@phoinix.lcs.mit.edu> (dimitrip@theory.lcs.mit.edu) Subject: Re: head TA *** EOOH *** Return-Path: Date: Sun, 9 Mar 1997 21:40:42 -0500 From: "David R. Karger" To: dimitrip@theory.lcs.mit.edu Cc: 6042-teachers In-Reply-To: <199703081831.AA04109@phoinix.lcs.mit.edu> (dimitrip@theory.lcs.mit.edu) Subject: Re: head TA Go along with Dmitri's list. I'd suggest 2-week stints.  1,, Mail-from: From karger@theory.lcs.mit.edu Mon Mar 10 14:45:47 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA21255; Mon, 10 Mar 97 19:48:31 EST From: karger@theory.lcs.mit.edu (David R. Karger) Received: by ibis (SMI-8.6/TOC-1.2C) id TAA27129; Mon, 10 Mar 1997 19:45:47 -0500 Date: Mon, 10 Mar 1997 19:45:47 -0500 Message-Id: <199703110045.TAA27129@ibis> To: 6042-forum@theory.lcs.mit.edu Subject: proving algorithm correctness *** EOOH *** Return-Path: From: karger@theory.lcs.mit.edu (David R. Karger) Date: Mon, 10 Mar 1997 19:45:47 -0500 To: 6042-forum@theory.lcs.mit.edu Subject: proving algorithm correctness Based on some questions I've been getting, I've put together a handout on "how to prove algorithms correct." It covers the 3 techniques we've used in class. I put it together in hurry, because I thought some of you would want to refer to it before handing in the homework. So it probably has quite a few typos. But the main ideas are there. I'll hand it out in class once I have had a chance to do some editing. -David Karger  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Mon Mar 10 17:24:57 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA23512; Mon, 10 Mar 97 22:24:22 EST Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA19594; Mon, 10 Mar 97 22:24:58 EST Message-Id: <199703110324.AA19594@peacock.lcs.mit.edu> To: alexv@theory.lcs.mit.edu (Alex Vasilescu) Cc: 6042-teachers, dimitrip In-Reply-To: Your message of Mon, 10 Mar 97 21:39:26 -0500. <199703110239.AA22953@theory.lcs.mit.edu> Date: Mon, 10 Mar 97 22:24:57 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: alexv@theory.lcs.mit.edu (Alex Vasilescu) Cc: 6042-teachers, dimitrip In-Reply-To: Your message of Mon, 10 Mar 97 21:39:26 -0500. <199703110239.AA22953@theory.lcs.mit.edu> Date: Mon, 10 Mar 97 22:24:57 -0500 From: dimitrip@theory.lcs.mit.edu Hi, Better to have to people writing solution for the final than checking them. Dimitri --------------------------------------------------- Hi David, Terri and Danielle, Here's an assignment for exam duties. Please, let me know if this is an inconvenient assignment. -- Alex Exams: Exam 1: Gathering Problems: Alex Writting Solutions: David Checking Solutions: Danielle Exam 2: Gathering Problems:David Writting Solutions:Terri Checking Solutions:Dimitri Final: Gathering Problems:Terri Writting Solutions:Dimitri Checking Solutions:Danielle, Alex  1,, Mail-from: From karger@theory.lcs.mit.edu Mon Mar 10 17:28:24 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA23581; Mon, 10 Mar 97 22:31:06 EST From: karger@theory.lcs.mit.edu (David R. Karger) Received: by ibis (SMI-8.6/TOC-1.2C) id WAA27339; Mon, 10 Mar 1997 22:28:24 -0500 Date: Mon, 10 Mar 1997 22:28:24 -0500 Message-Id: <199703110328.WAA27339@ibis> To: alexv@theory.lcs.mit.edu, dimitrip@theory.lcs.mit.edu Cc: 6042-teachers, dimitrip *** EOOH *** Return-Path: From: karger@theory.lcs.mit.edu (David R. Karger) Date: Mon, 10 Mar 1997 22:28:24 -0500 To: alexv@theory.lcs.mit.edu, dimitrip@theory.lcs.mit.edu Cc: 6042-teachers, dimitrip Dimitri is right; writing is harder than checking.  1,, Mail-from: From karger@theory.lcs.mit.edu Wed Mar 12 07:40:21 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA28550; Wed, 12 Mar 97 12:43:03 EST From: karger@theory.lcs.mit.edu (David R. Karger) Received: by ibis (SMI-8.6/TOC-1.2C) id MAA00950; Wed, 12 Mar 1997 12:40:21 -0500 Date: Wed, 12 Mar 1997 12:40:21 -0500 Message-Id: <199703121740.MAA00950@ibis> To: 6042-forum Subject: pset correction *** EOOH *** Return-Path: From: karger@theory.lcs.mit.edu (David R. Karger) Date: Wed, 12 Mar 1997 12:40:21 -0500 To: 6042-forum Subject: pset correction in pset 6, there's a type on the first problem. the 4th action is to give the _ticket_ to the conductor and get on (so the passenger no longer has the ticket).  1,, Mail-from: From gupta@theory.lcs.mit.edu Wed Mar 12 10:40:54 1997 Return-Path: Received: from whimbrel.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA02812; Wed, 12 Mar 97 15:39:04 EST From: gupta@theory.lcs.mit.edu (David Gupta) Received: by whimbrel.lcs.mit.edu (5.65c/TOC-1.2C) id AA11988; Wed, 12 Mar 97 15:40:54 EST Date: Wed, 12 Mar 97 15:40:54 EST Message-Id: <199703122040.AA11988@whimbrel.lcs.mit.edu> To: 6042-teachers, karger Subject: comments on Tuesday's lecture *** EOOH *** Return-Path: From: gupta@theory.lcs.mit.edu (David Gupta) Date: Wed, 12 Mar 97 15:40:54 EST To: 6042-teachers, karger Subject: comments on Tuesday's lecture Hi, In some of your proofs in lecture, you assumed that certain sets had a "size." I think you talked verbally about them being finite, but did you ever tell them what it meant for a set to be finite? If so, is it clear from that definition that finite sets have a "size?" Also, I think it's a bad idea to make discouraging comments like saying that it's impossible to get the order for composition right. David  1,, Mail-from: From karger@theory.lcs.mit.edu Wed Mar 12 15:20:01 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA07115; Wed, 12 Mar 97 20:22:45 EST Received: by ibis (SMI-8.6/TOC-1.2C) id UAA01567; Wed, 12 Mar 1997 20:20:01 -0500 Date: Wed, 12 Mar 1997 20:20:01 -0500 Message-Id: <199703130120.UAA01567@ibis> From: "David R. Karger" To: 6042-forum Subject: [gupta@theory.lcs.mit.edu: another ps6 typo] *** EOOH *** Return-Path: Date: Wed, 12 Mar 1997 20:20:01 -0500 From: "David R. Karger" To: 6042-forum Subject: [gupta@theory.lcs.mit.edu: another ps6 typo] ------- Start of forwarded message ------- From: gupta@theory.lcs.mit.edu (David Gupta) Date: Wed, 12 Mar 97 15:33:21 EST To: karger Subject: another ps6 typo Hi, In problem 12.a., The W should be a theta. David ------- End of forwarded message -------  1,, Mail-from: From miccianc@theory.lcs.mit.edu Thu Mar 13 08:34:59 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA21338; Thu, 13 Mar 97 13:33:02 EST From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA05823; Thu, 13 Mar 97 13:34:59 EST Date: Thu, 13 Mar 97 13:34:59 EST Message-Id: <199703131834.AA05823@lark.lcs.mit.edu> To: 6042-tas Subject: ps solutions *** EOOH *** Return-Path: From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Date: Thu, 13 Mar 97 13:34:59 EST To: 6042-tas Subject: ps solutions Are problem set solutions ready? Remember they should be handed out today in class, or at most tomorrow in recitation. daniele.  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Thu Mar 13 16:32:17 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA00893; Thu, 13 Mar 97 21:38:54 EST Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA06084; Thu, 13 Mar 97 21:32:20 EST Message-Id: <199703140232.AA06084@phoinix.lcs.mit.edu> To: karger Cc: 6042-tas Subject: quiz and pquiz problems Date: Thu, 13 Mar 97 21:32:17 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: karger Cc: 6042-tas Subject: quiz and pquiz problems Date: Thu, 13 Mar 97 21:32:17 -0500 From: dimitrip@theory.lcs.mit.edu Here is the problem for the practise quiz. I really think it's neat though and we should put it on the real quiz. \problem Define a relation $R \subset [n-1] \times \naturals $ by $aRb$ if $ab = 1 (\mbox{mod } n)$. \bparts \ppart Is this an equivalence relation? \ppart Is this relation a function from $[n-1]$ to $\naturals$? (In other words, can a function $f: [n-1] \rightarrow \naturals$ be defined such that $f(a) = b$ whenever $aRb$?) \eparts Now define the same relation on $[n-1] \times [n-1]$. Show that if $n$ is prime, then this relation is a function from $[n-1]$ to $[n-1]$, and define $f(a)=b$ if $aRb$. \bparts \ppart Is $f$ injective? \ppart Is $f$ surgective? \eparts ---------------------------------------------------------- Here's the problem for the quiz. It's really easy, but it looks intimidating, so I give it a rating of medium. \problem Let $\Omega$ be some universal set. Define a relation $R_1$ on $2^{\Omega}$ by the rule $(A,B) \in R_1$ if $A \subseteq B$. Decide whether this relation is reflexive, symmetric, antisymmetric, transitive. Now let $f: \Omega \rightarrow S$ be a function to some arbitrary set $S$. Define the relation $R_2$ on $2^{\Omega}$ by the rule $(A,B) \in R_2$ if $f(A) \subseteq f(B)$. \bparts \ppart Show that $R_1 \cap R_2 = R_1$ \ppart Show that $R_1 \cup R_2 = R_2$. \ppart Now suppose that $f$ is injective. Show that $R_1 \cap R_2 = R_2$ \eparts  1,, Mail-from: From karger@theory.lcs.mit.edu Fri Mar 14 10:02:06 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA16949; Fri, 14 Mar 97 15:04:51 EST Received: by ibis (SMI-8.6/TOC-1.2C) id PAA06329; Fri, 14 Mar 1997 15:02:06 -0500 Date: Fri, 14 Mar 1997 15:02:06 -0500 Message-Id: <199703142002.PAA06329@ibis> From: "David R. Karger" To: 6042-forum *** EOOH *** Return-Path: Date: Fri, 14 Mar 1997 15:02:06 -0500 From: "David R. Karger" To: 6042-forum In the "cyclic shift" problem, note that any 3 elements of the list can be cyclically shifted; for example, 1,2,3,4,5,6 ----> 1,4,3,5,2,6 is a 3 element shift involving the elements 2,4, and 5  1,, Mail-from: From karger@theory.lcs.mit.edu Fri Mar 14 10:36:33 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA17665; Fri, 14 Mar 97 15:39:18 EST Received: by ibis (SMI-8.6/TOC-1.2C) id PAA06361; Fri, 14 Mar 1997 15:36:33 -0500 Date: Fri, 14 Mar 1997 15:36:33 -0500 Message-Id: <199703142036.PAA06361@ibis> From: "David R. Karger" To: 6042-forum Subject: problem set *** EOOH *** Return-Path: Date: Fri, 14 Mar 1997 15:36:33 -0500 From: "David R. Karger" To: 6042-forum Subject: problem set As an intermediate step, you might want to restrict attention to 3-element cyclic shifts of 3 adjacent elements in the list. That is, shifts like 1,5,3,6,4,2---->1,3,6,5,4,2  1,, Mail-from: From karger@theory.lcs.mit.edu Fri Mar 14 12:13:38 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA19668; Fri, 14 Mar 97 17:16:24 EST From: karger@theory.lcs.mit.edu (David R. Karger) Received: by ibis (SMI-8.6/TOC-1.2C) id RAA06485; Fri, 14 Mar 1997 17:13:38 -0500 Date: Fri, 14 Mar 1997 17:13:38 -0500 Message-Id: <199703142213.RAA06485@ibis> To: 6042-forum Subject: practice exam *** EOOH *** Return-Path: From: karger@theory.lcs.mit.edu (David R. Karger) Date: Fri, 14 Mar 1997 17:13:38 -0500 To: 6042-forum Subject: practice exam the practice exam has been posted on the web. Due to time constraints that limited the amount of revision, it is somewhat harder than I expect the exam to be. It will be covered at the monday review sessions.  1,, Mail-from: From karger@theory.lcs.mit.edu Fri Mar 14 13:11:19 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA21138; Fri, 14 Mar 97 18:14:06 EST Received: by ibis (SMI-8.6/TOC-1.2C) id SAA06538; Fri, 14 Mar 1997 18:11:19 -0500 Date: Fri, 14 Mar 1997 18:11:19 -0500 Message-Id: <199703142311.SAA06538@ibis> From: "David R. Karger" To: 6042-forum Subject: exam *** EOOH *** Return-Path: Date: Fri, 14 Mar 1997 18:11:19 -0500 From: "David R. Karger" To: 6042-forum Subject: exam It has been brought to my attention that one is not supposed to have a problem set due the week of the exam. Because of its timing, my intent had been to distribute 1/2 a problem set (which you already have) before the exam, and another half after. Although this does give you a net of 1 cancelled problem set, it turns out that this does not meet the MIT standards. Unfortunately, it is now to late to repair the error: it would be unfair to those who have already begun it for me to cancel the tuesday problem set. I will avoid this problem next exam. Regarding the exam, some of you may have noticed that the practice exam does not cover cardinality or pigeonholing arguments. In order to give you a chance to encounter those first on problem sets, I have decided to hold those two topics over until the next exam. They will not be addressed on this one. -David Karger  1,, Mail-from: From tiuzzol@MIT.EDU Fri Mar 14 17:56:54 1997 Return-Path: Received: from MIT.EDU (PACIFIC-CARRIER-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA24268; Fri, 14 Mar 97 22:56:55 EST Received: from RINGWORLD.MIT.EDU by MIT.EDU with SMTP id AA02233; Fri, 14 Mar 97 22:56:49 EST Received: (from tiuzzol@localhost) by ringworld.MIT.EDU (8.6.11/8.6.11) id WAA02665; Fri, 14 Mar 1997 22:56:54 -0500 Date: Fri, 14 Mar 1997 22:56:54 -0500 From: Terri Iuzzolino Message-Id: <199703150356.WAA02665@ringworld.MIT.EDU> To: 6042-forum@theory.lcs.mit.edu, alexv@theory.lcs.mit.edu Subject: Re: Exam Review *** EOOH *** Return-Path: Date: Fri, 14 Mar 1997 22:56:54 -0500 From: Terri Iuzzolino To: 6042-forum@theory.lcs.mit.edu, alexv@theory.lcs.mit.edu Subject: Re: Exam Review There will also be office hours on Monday from about 4-5:30pm covering the problem set (NE43-3rd floor lounge as usual). Terri  1,, Mail-from: From karger@theory.lcs.mit.edu Sun Mar 16 18:46:55 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA17054; Sun, 16 Mar 97 23:49:41 EST Received: by ibis (SMI-8.6/TOC-1.2C) id XAA10177; Sun, 16 Mar 1997 23:46:55 -0500 Date: Sun, 16 Mar 1997 23:46:55 -0500 Message-Id: <199703170446.XAA10177@ibis> From: "David R. Karger" To: 6042-forum Subject: reading for quiz *** EOOH *** Return-Path: Date: Sun, 16 Mar 1997 23:46:55 -0500 From: "David R. Karger" To: 6042-forum Subject: reading for quiz I've been asked about the readings from Rosen that are relevant to the quiz. Here's a rough list: 1.1-1.6 2.1-2.5 3 6.1-6.5 (we'll do 6.6 tuesday, but it won't be on the quiz) the state machine and algorithm correctness handouts  1,, Mail-from: From tiuzzol@bobp.mit.edu Tue Mar 18 07:08:23 1997 Return-Path: Received: from BOBP.MIT.EDU by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA21248; Tue, 18 Mar 97 12:08:22 EST Received: (from tiuzzol@localhost) by bobp.mit.edu (8.8.4/8.7.3) id MAA07363; Tue, 18 Mar 1997 12:08:23 -0500 Date: Tue, 18 Mar 1997 12:08:23 -0500 From: Terri Iuzzolino Message-Id: <199703181708.MAA07363@bobp.mit.edu> To: 6042-tas@theory.lcs.mit.edu, alexv@theory.lcs.mit.edu Subject: Practice Exam *** EOOH *** Return-Path: Date: Tue, 18 Mar 1997 12:08:23 -0500 From: Terri Iuzzolino To: 6042-tas@theory.lcs.mit.edu, alexv@theory.lcs.mit.edu Subject: Practice Exam Well, ok. I guess that answers that question..... I've started a practice exam file in the directory. Right now I'm editing it, but if someone is psyched ((no.. bad word. able to ) work on solutions too, let me know. I suggest working your way bakcwards ( start with the last problem on the test). Hopefully they'll be ready to proof around 2pm. Terri PS: could whichever TA actualy shows up to class today put out the problem set boxes? They're underneath the table we always sit on (well, in the table). Thanks!  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Tue Mar 18 07:25:50 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA21864; Tue, 18 Mar 97 12:32:29 EST Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA13447; Tue, 18 Mar 97 12:25:52 EST Message-Id: <199703181725.AA13447@phoinix.lcs.mit.edu> To: 6042-tas Subject: ps6 Date: Tue, 18 Mar 97 12:25:50 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-tas Subject: ps6 Date: Tue, 18 Mar 97 12:25:50 -0500 From: dimitrip@theory.lcs.mit.edu I debugged ps6 solutions and added problem 10. I cannot vouch for problem 5. I cannot even decide if the statement is correct. Dimitri  1,, Mail-from: From miccianc@theory.lcs.mit.edu Tue Mar 18 08:32:48 1997 Return-Path: Received: from ostrich.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA23293; Tue, 18 Mar 97 13:35:34 EST From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Received: by ostrich.lcs.mit.edu (5.65c/TOC-1.2C) id AA24620; Tue, 18 Mar 97 13:32:48 EST Date: Tue, 18 Mar 97 13:32:48 EST Message-Id: <199703181832.AA24620@ostrich.lcs.mit.edu> To: 6042-tas Subject: problem 5 ps6 *** EOOH *** Return-Path: From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Date: Tue, 18 Mar 97 13:32:48 EST To: 6042-tas Subject: problem 5 ps6 I'll do ps6 problem 5. I suggested the problem and I feel responsible for it. I am pretty confident that the statement is correct. Hopefully solution will be ready by 2:30. Daniele.  1,, Mail-from: From tiuzzol@bobp.mit.edu Tue Mar 18 08:41:04 1997 Return-Path: Received: from BOBP.MIT.EDU by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA23410; Tue, 18 Mar 97 13:41:02 EST Received: (from tiuzzol@localhost) by bobp.mit.edu (8.8.4/8.7.3) id NAA07655; Tue, 18 Mar 1997 13:41:04 -0500 Date: Tue, 18 Mar 1997 13:41:04 -0500 From: Terri Iuzzolino Message-Id: <199703181841.NAA07655@bobp.mit.edu> To: 6042-tas@theory.lcs.mit.edu, miccianc@theory.lcs.mit.edu Subject: Re: problem 5 ps6 *** EOOH *** Return-Path: Date: Tue, 18 Mar 1997 13:41:04 -0500 From: Terri Iuzzolino To: 6042-tas@theory.lcs.mit.edu, miccianc@theory.lcs.mit.edu Subject: Re: problem 5 ps6 Yeah. the statement's correct, and I think the proof's ok too. but if there's a clearer one, that would be good.  1,, Mail-from: From miccianc@theory.lcs.mit.edu Tue Mar 18 09:18:00 1997 Return-Path: Received: from ostrich.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA24380; Tue, 18 Mar 97 14:20:46 EST From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Received: by ostrich.lcs.mit.edu (5.65c/TOC-1.2C) id AA24742; Tue, 18 Mar 97 14:18:00 EST Date: Tue, 18 Mar 97 14:18:00 EST Message-Id: <199703181918.AA24742@ostrich.lcs.mit.edu> To: 6042-tas Subject: ps6 p5 *** EOOH *** Return-Path: From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Date: Tue, 18 Mar 97 14:18:00 EST To: 6042-tas Subject: ps6 p5 I found a bug in ps6p5: the "and" at the end of the first paragraph should be an "or", which makes the second part of the proof wrong. I corrected the problem and reformulated the proof as an argument for contradiction, which I think makes it easier to follow. Daniele.  1,, Mail-from: From alexv@theory.lcs.mit.edu Tue Mar 18 12:06:04 1997 Return-Path: Received: from whimbrel.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA28535; Tue, 18 Mar 97 17:04:12 EST From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Received: by whimbrel.lcs.mit.edu (5.65c/TOC-1.2C) id AA00255; Tue, 18 Mar 97 17:06:04 EST Date: Tue, 18 Mar 97 17:06:04 EST Message-Id: <199703182206.AA00255@whimbrel.lcs.mit.edu> To: 6042-forum *** EOOH *** Return-Path: From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Date: Tue, 18 Mar 97 17:06:04 EST To: 6042-forum We have put on the web the solutions to: 1. Problem Set 6 2. Practice Quiz 1 Solutions 3. Selected tutorial problem solutions (We were not planning to handout any but since people asked .... We may add more later this evening) 4. Lecture 11 Good luck studying! -- Your TAs.  1,, Mail-from: From alexv@theory.lcs.mit.edu Tue Mar 18 12:20:17 1997 Return-Path: Received: from whimbrel.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA28908; Tue, 18 Mar 97 17:18:23 EST From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Received: by whimbrel.lcs.mit.edu (5.65c/TOC-1.2C) id AA00261; Tue, 18 Mar 97 17:20:17 EST Date: Tue, 18 Mar 97 17:20:17 EST Message-Id: <199703182220.AA00261@whimbrel.lcs.mit.edu> To: 6042-forum Subject: Quiz 1 *** EOOH *** Return-Path: From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Date: Tue, 18 Mar 97 17:20:17 EST To: 6042-forum Subject: Quiz 1 The 6.042 Exam will be held in two rooms. We would like an even split of student between the two rooms. So.... Alex's students should go to room 3-270 Daniele's students should go to room 3-370.  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Tue Mar 18 12:15:44 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA29007; Tue, 18 Mar 97 17:22:22 EST Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA13814; Tue, 18 Mar 97 17:15:45 EST Message-Id: <199703182215.AA13814@phoinix.lcs.mit.edu> To: 6042-tas Cc: dimitrip Subject: hom Date: Tue, 18 Mar 97 17:15:44 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-tas Cc: dimitrip Subject: hom Date: Tue, 18 Mar 97 17:15:44 -0500 From: dimitrip@theory.lcs.mit.edu Hello, Does anybody has any unclaimed problem sets? Some of my students did not get back their graded psets. Dimitri  1,, Mail-from: From alexv@theory.lcs.mit.edu Tue Mar 18 13:00:18 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA29869; Tue, 18 Mar 97 17:58:18 EST From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA06415; Tue, 18 Mar 97 18:00:18 EST Date: Tue, 18 Mar 97 18:00:18 EST Message-Id: <199703182300.AA06415@lark.lcs.mit.edu> To: 6042-forum Subject: When is the Quiz? *** EOOH *** Return-Path: From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Date: Tue, 18 Mar 97 18:00:18 EST To: 6042-forum Subject: When is the Quiz? For those who forgot: Quiz 1 will take place from 7pm--9pm in rooms 3-270(Alex' students) and 3-370(Daniele's students).  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Tue Mar 18 13:49:04 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA00920; Tue, 18 Mar 97 18:55:43 EST Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA13966; Tue, 18 Mar 97 18:49:05 EST Message-Id: <199703182349.AA13966@phoinix.lcs.mit.edu> To: karger Cc: 6042-tas Subject: tutorial 7 suggestions Date: Tue, 18 Mar 97 18:49:04 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: karger Cc: 6042-tas Subject: tutorial 7 suggestions Date: Tue, 18 Mar 97 18:49:04 -0500 From: dimitrip@theory.lcs.mit.edu Hello, Here is last years tutorial. It's also in the tutorials directory as tutorial7 --------------------------------------------------\documentstyle[12pt,twoside,amsfonts,amstex]{article} \documentstyle[12pt,twoside,amsfonts,amstex]{article} \input{macros-course-tutorials} \parskip1.5ex \parindent0pt \begin{document} \tutorial{tutorial7}{Problems for Tutorial 7}{April 1, 1997} \section {Task Scheduling with Finitely Many Processors} \noindent Consider a poset of W tasks where each task requires unit time to be completed. Let D be the length of the longest (critical) path. Show that if we have P processors then we can complete all the tasks in at most $D+\frac{W}{P}$ time steps. Show that this bound is within a factor of 2 of the optimal for any set of tasks.\\ \section {Conflict Graphs} \noindent Consider a collection of tasks $T_1,...,T_n$, where each $T_i$ has a set of resource requirements $S_i$. (Each $S_i$ is a subset of some universal set of resources $R$.) Each task needs exclusive access to its resources when it executes and each task requires unit time to be executed. (a) In terms of the $T_i$'s and the $S_i$'s, define a conflict graph describing which tasks cannot execute at the same time. (b) If each task is supposed to execute once, describe in terms of your conflict graph, a minimum-time schedule for all of them to execute. How long does it take for all the tasks to be executed? (c) Now suppose that each task may have to be executed an arbitrary number of times. Specifically, there is a {\em scheduler} who interacts with a {\em client}. Initially, the client submits some subset of the tasks that it wants to have performed. The scheduler responds by scheduling some of these to execute immediately, and leaves the others {\em pending}. At each successive time step, the client submits an additional set of tasks; these cannot include any pending tasks, but can include tasks that have already been performed at previous time steps. You are to design a strategy for the scheduler to ensure that all requested tasks eventually get performed. Try to minimize the worst-case waiting time for an individual task. \section {Conflict Graphs and Precedence} \noindent Consider again a set of tasks $T_1, \dots, T_n$, where each has a set of resource requirements $S_i$. As before, each task needs exclusive access to its resources, and each task requires unit time, but in addition, there is a precedence relation between the tasks -- some tasks are required to precede other tasks. Develop a good method for scheduling all the tasks, each exactly once. Try to minimize the total schedule time. \end{document}  1,, Mail-from: From karger@theory.lcs.mit.edu Tue Mar 18 16:15:42 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA03369; Tue, 18 Mar 97 21:18:29 EST Received: by ibis (SMI-8.6/TOC-1.2C) id VAA14254; Tue, 18 Mar 1997 21:15:42 -0500 Date: Tue, 18 Mar 1997 21:15:42 -0500 Message-Id: <199703190215.VAA14254@ibis> From: "David R. Karger" To: 6042-forum Subject: new homework *** EOOH *** Return-Path: Date: Tue, 18 Mar 1997 21:15:42 -0500 From: "David R. Karger" To: 6042-forum Subject: new homework Those who weren't in class today might want to know: I distributed a new homework, due when you arrive at the quiz tomorrow. It shouldn't take you too long to complete, but I consider it important that you do so. Please download it from the web page and do it. -David Karger  1,, Mail-from: From karger@theory.lcs.mit.edu Tue Mar 18 16:17:22 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA03393; Tue, 18 Mar 97 21:20:09 EST Received: by ibis (SMI-8.6/TOC-1.2C) id VAA14260; Tue, 18 Mar 1997 21:17:22 -0500 Date: Tue, 18 Mar 1997 21:17:22 -0500 Message-Id: <199703190217.VAA14260@ibis> From: "David R. Karger" To: 6042-forum Subject: exam/calculators *** EOOH *** Return-Path: Date: Tue, 18 Mar 1997 21:17:22 -0500 From: "David R. Karger" To: 6042-forum Subject: exam/calculators You may bring a caclulator to the exam if you wish, but 1) no stored programs 2) it is unlikely to be of any use.  1,, Mail-from: From akhtar@MIT.EDU Wed Mar 19 05:26:04 1997 Return-Path: Received: from MIT.EDU (PACIFIC-CARRIER-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA13270; Wed, 19 Mar 97 10:26:06 EST Received: from MIT.MIT.EDU by MIT.EDU with SMTP id AA29715; Wed, 19 Mar 97 10:25:58 EST Received: from AKHTAR.MIT.EDU by MIT.MIT.EDU (5.61/4.7) id AA27352; Wed, 19 Mar 97 10:26:05 EST Message-Id: <9703191526.AA27352@MIT.MIT.EDU> X-Sender: akhtar@po8.mit.edu X-Mailer: Windows Eudora Pro Version 2.1.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Wed, 19 Mar 1997 10:26:04 -0500 To: 6042-tas@theory.lcs.mit.edu From: Kareem Akhtar Subject: *** EOOH *** Return-Path: X-Sender: akhtar@po8.mit.edu X-Mailer: Windows Eudora Pro Version 2.1.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Wed, 19 Mar 1997 10:26:04 -0500 To: 6042-tas@theory.lcs.mit.edu From: Kareem Akhtar Subject: Hello, I was wondering if there were any office hours today before the 6042 exam? -Kareem Akhtar  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Wed Mar 19 06:46:32 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA15581; Wed, 19 Mar 97 11:53:12 EST Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA15072; Wed, 19 Mar 97 11:46:33 EST Message-Id: <199703191646.AA15072@phoinix.lcs.mit.edu> To: karger Cc: 6042-tas Subject: quiz Date: Wed, 19 Mar 97 11:46:32 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: karger Cc: 6042-tas Subject: quiz Date: Wed, 19 Mar 97 11:46:32 -0500 From: dimitrip@theory.lcs.mit.edu I was about to send mail suggesting how we can condense the quiz but I realized that problem 10 is optional. Given this fact, I think the quiz is just fine and definitely doable within 1:30 hours. Dimitri  1,, Mail-from: From miccianc@theory.lcs.mit.edu Wed Mar 19 08:01:47 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA18737; Wed, 19 Mar 97 12:59:48 EST From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA06542; Wed, 19 Mar 97 13:01:47 EST Date: Wed, 19 Mar 97 13:01:47 EST Message-Id: <199703191801.AA06542@lark.lcs.mit.edu> To: karger@theory.lcs.mit.edu In-Reply-To: <199703190538.AAA14418@ibis> (karger@theory.lcs.mit.edu) Subject: Re: grading Cc: 6042-tas *** EOOH *** Return-Path: From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Date: Wed, 19 Mar 97 13:01:47 EST To: karger@theory.lcs.mit.edu In-Reply-To: <199703190538.AAA14418@ibis> (karger@theory.lcs.mit.edu) Subject: Re: grading Cc: 6042-tas > Guys, we need to plan quiz grading. If we grade wednsday night, we > can get the quuiz back to them thursday. However, I can't be there for > grading until around 10:30. Do people want to start then? Or start > before then? Or would you rather merge the grading into a super-long > staff meeting on thursday evening, and return the exams on friday in > recitation? Sorry men, I don't think I can do any work at that time. I could probably take some problems at home and do some grading there at night. Thursday is even worse. I have a class in the morning. There is class 2:30-4, then staff meeting, then make up quiz till 9, and I have to prepare recitation for friday. Do we really need to return quizes before spring break? Daniele.  1,, Mail-from: From tiuzzol@MIT.EDU Wed Mar 19 09:10:46 1997 Return-Path: Received: from MIT.EDU (PACIFIC-CARRIER-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA20046; Wed, 19 Mar 97 14:10:47 EST Received: from YAZ-PISTACHIO.MIT.EDU by MIT.EDU with SMTP id AA26292; Wed, 19 Mar 97 14:10:39 EST From: tiuzzol@MIT.EDU Received: by yaz-pistachio.MIT.EDU (5.57/4.7) id AA12232; Wed, 19 Mar 97 14:10:46 -0500 Date: Wed, 19 Mar 97 14:10:46 -0500 Message-Id: <9703191910.AA12232@yaz-pistachio.MIT.EDU> To: karger@theory.lcs.mit.edu, miccianc@theory.lcs.mit.edu Subject: Re: grading Cc: 6042-tas@theory.lcs.mit.edu *** EOOH *** Return-Path: From: tiuzzol@MIT.EDU Date: Wed, 19 Mar 97 14:10:46 -0500 To: karger@theory.lcs.mit.edu, miccianc@theory.lcs.mit.edu Subject: Re: grading Cc: 6042-tas@theory.lcs.mit.edu Actually, I agree with Daniele. Drop date is not Friday, so the quizzes do not need to be back before spring break. We'd probably do the students a larger favor by taking the time to write comments on the tests rather than grading them quickly. I can work at the following times: Wednesday night Thursday until 12:30pm, Thursday after class. Friday except noon-1 and 5-7. (Though I'd prefer to have the evening free.) I will be gone from Saturday to Tuesday during spring break. I have a problem set due Friday which I would like to work on, so I'd vote for over break. The other question is whether or not we need to grade them together (yes, I realize it's more of a bonding experience that way)... but if we each grade 2 or 3 of the problems, then we don't have to grade them all at the same time, we just have to make sure everyone gets all of the tests at some point. If we are each grading the entire test, then we will need some sort of grading key to make sure points are taken off uniformly. This will most likely take an hour or two to put together. Terri  1,, Mail-from: From alexv@theory.lcs.mit.edu Wed Mar 19 17:06:14 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA29890; Wed, 19 Mar 97 22:08:11 EST From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA00534; Wed, 19 Mar 97 22:06:14 EST Date: Wed, 19 Mar 97 22:06:14 EST Message-Id: <199703200306.AA00534@owl.lcs.mit.edu> To: 6042-tas *** EOOH *** Return-Path: From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Date: Wed, 19 Mar 97 22:06:14 EST To: 6042-tas Reminder: Lect. 12: David Lect. 13: Alex Problem Set Solutions: Problem Set 7: Daniele, Alex Problem Sets Solutions Checked by: Problem Set 7: Dimitri  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Wed Mar 19 22:10:22 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA04462; Thu, 20 Mar 97 03:17:04 EST Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA16151; Thu, 20 Mar 97 03:10:24 EST Message-Id: <199703200810.AA16151@phoinix.lcs.mit.edu> To: 6042-teachers Subject: quiz grading Date: Thu, 20 Mar 97 03:10:22 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-teachers Subject: quiz grading Date: Thu, 20 Mar 97 03:10:22 -0500 From: dimitrip@theory.lcs.mit.edu Hello all, This is just to let you know that I finished grading problem 3 of the quiz. I think now I am supposed to do 10 with Daniele. I will not be in tomorrow but I can do it Friday or sometime after the weekend. Cheers, Dimitri  1,, Mail-from: From miccianc@theory.lcs.mit.edu Thu Mar 20 06:24:17 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA11106; Thu, 20 Mar 97 11:22:17 EST From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA06680; Thu, 20 Mar 97 11:24:17 EST Date: Thu, 20 Mar 97 11:24:17 EST Message-Id: <199703201624.AA06680@lark.lcs.mit.edu> To: 6042-teachers *** EOOH *** Return-Path: From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Date: Thu, 20 Mar 97 11:24:17 EST To: 6042-teachers Conflict quiz is tonight 7-9pm in NE43-308. Daniele.  1,, Mail-from: From alexv@theory.lcs.mit.edu Thu Mar 20 11:58:15 1997 Return-Path: Received: from whimbrel.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA18175; Thu, 20 Mar 97 16:56:21 EST From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Received: by whimbrel.lcs.mit.edu (5.65c/TOC-1.2C) id AA01247; Thu, 20 Mar 97 16:58:15 EST Date: Thu, 20 Mar 97 16:58:15 EST Message-Id: <199703202158.AA01247@whimbrel.lcs.mit.edu> To: 6042-tas Subject: Staff Meeting Summary *** EOOH *** Return-Path: From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Date: Thu, 20 Mar 97 16:58:15 EST To: 6042-tas Subject: Staff Meeting Summary Here's what happened in the staff meeting: 1. David wants all the freshman exams graded by Monday or Tuesday (March 24 -- Beginning of spring break)!!! Terri will separate the freshman exams from the rest. There are at least 35 freshman. 2. Email David problems on graph theory (and posets if interesting only) for Problem Set 8, by Tuesday (March 24 -- beginning of spring break). Alex.  1,, Mail-from: From karger@theory.lcs.mit.edu Thu Mar 20 13:30:34 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA20723; Thu, 20 Mar 97 18:33:24 EST Received: by ibis (SMI-8.6/TOC-1.2C) id SAA18519; Thu, 20 Mar 1997 18:30:34 -0500 Date: Thu, 20 Mar 1997 18:30:34 -0500 Message-Id: <199703202330.SAA18519@ibis> From: "David R. Karger" To: 6042-forum Subject: pset 7 due april 1 *** EOOH *** Return-Path: Date: Thu, 20 Mar 1997 18:30:34 -0500 From: "David R. Karger" To: 6042-forum Subject: pset 7 due april 1 There was a date error on pset 7. it is due tuesday april 1 in class, as usual.  1,, Mail-from: From gupta@theory.lcs.mit.edu Fri Mar 21 13:01:09 1997 Return-Path: Received: from whimbrel.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA12254; Fri, 21 Mar 97 17:59:14 EST From: gupta@theory.lcs.mit.edu (David Gupta) Received: by whimbrel.lcs.mit.edu (5.65c/TOC-1.2C) id AA01469; Fri, 21 Mar 97 18:01:09 EST Date: Fri, 21 Mar 97 18:01:09 EST Message-Id: <199703212301.AA01469@whimbrel.lcs.mit.edu> To: 6042-forum *** EOOH *** Return-Path: From: gupta@theory.lcs.mit.edu (David Gupta) Date: Fri, 21 Mar 97 18:01:09 EST To: 6042-forum Hello all, I will be away the Monday after Spring Break. Those of you who are in my Monday tutorials should attend one of the other tutorials, listed on the course home page. It would be particularly good if you could attend my 7:00pm recitation on Tuesday. My apologies to all for whatever inconvenience this causes. David G.  1,, Mail-from: From tiuzzol@MIT.EDU Sat Mar 22 01:01:35 1997 Return-Path: Received: from MIT.EDU (PACIFIC-CARRIER-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA18952; Sat, 22 Mar 97 06:01:37 EST Received: from RINGWORLD.MIT.EDU by MIT.EDU with SMTP id AA24075; Sat, 22 Mar 97 06:01:28 EST Received: (from tiuzzol@localhost) by ringworld.MIT.EDU (8.6.11/8.6.11) id GAA01982 for 6042-teachers@theory.lcs.mit.edu; Sat, 22 Mar 1997 06:01:35 -0500 Date: Sat, 22 Mar 1997 06:01:35 -0500 From: Terri Iuzzolino Message-Id: <199703221101.GAA01982@ringworld.MIT.EDU> To: 6042-teachers@theory.lcs.mit.edu Subject: tests *** EOOH *** Return-Path: Date: Sat, 22 Mar 1997 06:01:35 -0500 From: Terri Iuzzolino To: 6042-teachers@theory.lcs.mit.edu Subject: tests the tests are in Danielle's office. Terri  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Mon Mar 24 09:24:43 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA19834; Mon, 24 Mar 97 14:31:27 EST Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA22903; Mon, 24 Mar 97 14:24:44 EST Message-Id: <199703241924.AA22903@phoinix.lcs.mit.edu> To: alexv@theory.lcs.mit.edu (Alex Vasilescu) Cc: 6042-tas, dimitrip In-Reply-To: Your message of Sat, 22 Mar 97 02:37:22 -0500. <199703220737.AA17848@theory.lcs.mit.edu> Date: Mon, 24 Mar 97 14:24:43 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: alexv@theory.lcs.mit.edu (Alex Vasilescu) Cc: 6042-tas, dimitrip In-Reply-To: Your message of Sat, 22 Mar 97 02:37:22 -0500. <199703220737.AA17848@theory.lcs.mit.edu> Date: Mon, 24 Mar 97 14:24:43 -0500 From: dimitrip@theory.lcs.mit.edu Hello, My grading is done. Problem 3 and problem 10 in half of the exams. Dimitri  1,, Mail-from: From karger@theory.lcs.mit.edu Mon Mar 24 10:38:45 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA21247; Mon, 24 Mar 97 15:41:37 EST Received: by ibis (SMI-8.6/TOC-1.2C) id PAA27775; Mon, 24 Mar 1997 15:38:45 -0500 Date: Mon, 24 Mar 1997 15:38:45 -0500 Message-Id: <199703242038.PAA27775@ibis> From: "David R. Karger" To: 6042-forum Subject: [mibs@MIT.EDU: tutorial moves] *** EOOH *** Return-Path: Date: Mon, 24 Mar 1997 15:38:45 -0500 From: "David R. Karger" To: 6042-forum Subject: [mibs@MIT.EDU: tutorial moves] ------- Start of forwarded message ------- Date: Mon, 24 Mar 1997 11:12:56 +0000 To: karger@lcs.MIT.EDU From: mibs@MIT.EDU (Mibsy Brooks) Subject: tutorial moves On Monday, 4/28 your tutorials (which I believe are still being held) have been moved to different rooms due to Masterworks presentations. The section meeting at 2pm in 34-302 will move to 26-314 The section meeting at 2pm in 34-303 will move to 24-121 The section meeting at 2pm in 34-304 will move to 36-839 Mibsy ------- End of forwarded message -------  1,, Mail-from: From karger@theory.lcs.mit.edu Mon Mar 24 19:00:16 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA29593; Tue, 25 Mar 97 00:03:07 EST Received: by ibis (SMI-8.6/TOC-1.2C) id AAA02063; Tue, 25 Mar 1997 00:00:16 -0500 Date: Tue, 25 Mar 1997 00:00:16 -0500 Message-Id: <199703250500.AAA02063@ibis> From: "David R. Karger" To: 6042-tas Subject: [etara@MIT.EDU: ps4 and 5 notes] *** EOOH *** Return-Path: Date: Tue, 25 Mar 1997 00:00:16 -0500 From: "David R. Karger" To: 6042-tas Subject: [etara@MIT.EDU: ps4 and 5 notes] ------- Start of forwarded message ------- From: etara@MIT.EDU To: karger@theory.lcs.mit.edu Subject: ps4 and 5 notes Date: Fri, 21 Mar 1997 13:27:47 EST Prof. Karger, Here are my notes on PS4 and 5. Students did well on both of these problem sets. They're getting a lot better at writing valid inductive proofs. Sometimes, thogh, when a problem doesn't suggest that they use induction, they don't use it where they should. They end up showing that the theorem works for a few cases and then say, "and this can be generalized" or "and so on." They realize that they need the repitition to prove the theorem, but they don't realize that just saying "and so on" does not constitute a valid proof. On PS4, Problem 1, a few students had trouble giving a well-ordering proof. They just didn't seem to understand the basic idea behind well-ordering: how to define the set so that it will help them prove the theorem, etc. On Problem 5, most of them forgot to prove both directions of the iff. On Problems 7 and 8, a lot of them forgot to prove termination of the algorithm. PS5, Problem 1, a lot of students didn't see the problem with encrypting/decrypting "YOU" On Problem 2, a lot of them tried to prove invalid loop invariants. I think the confusion was over the fact that the loop in the algorithm counts down from n to 0, and they were counting up in the inductive step of their proof of the invariant. Several people were also confused about what they were inducting on: n or the kth loop of the alg. for some unspecified n. Several people gave a base case for inducting on n and an inductive step for inducting on the number of iterations of the loop. For Problem 3 most of them didn't specify whether the msb or the lsb was first. I think they confused themselves by not specifying this because at different points of their algorithms and proofs, they assumed different configurations, so the end result was that their algorithms didn't work either way. On Problem 8, a few of them gave incorrect invariants- mostly because they mixed up total and total'. Also, a few forgot to prove termination. ------- End of forwarded message -------  1,, Mail-from: From miccianc@theory.lcs.mit.edu Fri Mar 28 11:55:02 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA20076; Fri, 28 Mar 97 16:52:56 EST Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA07943; Fri, 28 Mar 97 16:55:02 EST Date: Fri, 28 Mar 97 16:55:02 EST Message-Id: <199703282155.AA07943@lark.lcs.mit.edu> From: Daniele Micciancio To: 6042-forum Subject: PS7 correction *** EOOH *** Return-Path: Date: Fri, 28 Mar 97 16:55:02 EST From: Daniele Micciancio To: 6042-forum Subject: PS7 correction In problem set 7, problem 4, the relation $R$ should be defined as {(x,y): f(x)>f(y) or x=y} instead of {(x,y): f(x)>=f(y)}. Daniele.  1,, Mail-from: From miccianc@theory.lcs.mit.edu Fri Mar 28 12:26:29 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA20671; Fri, 28 Mar 97 17:24:24 EST Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA07950; Fri, 28 Mar 97 17:26:29 EST Date: Fri, 28 Mar 97 17:26:29 EST Message-Id: <199703282226.AA07950@lark.lcs.mit.edu> From: Daniele Micciancio To: 6042-forum Subject: PS7 correction *** EOOH *** Return-Path: Date: Fri, 28 Mar 97 17:26:29 EST From: Daniele Micciancio To: 6042-forum Subject: PS7 correction The word "minimum" in problem 5.b be should be replaced by "minimal". Daniele.  1,, Mail-from: From karger@theory.lcs.mit.edu Fri Mar 28 12:40:41 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA20988; Fri, 28 Mar 97 17:43:35 EST Received: by ibis (SMI-8.6/TOC-1.2C) id RAA11377; Fri, 28 Mar 1997 17:40:41 -0500 Date: Fri, 28 Mar 1997 17:40:41 -0500 Message-Id: <199703282240.RAA11377@ibis> From: "David R. Karger" To: 6042-forum Subject: grading *** EOOH *** Return-Path: Date: Fri, 28 Mar 1997 17:40:41 -0500 From: "David R. Karger" To: 6042-forum Subject: grading As some of you may recall, there were some problems regarding the grading of the early problem sets---confusion among the graders about whether optional problems were counted toward grades or not. At the time, I asked you to hold on to your problem sets so that we could straighten things out later. Now's a good time, since you've just done a quiz and won't need to review the psets for a while. Please bring _all_ of your graded problem sets to tutorial on monday. We will check them against grades and fix the inconsistencies. -David Karger  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Mon Apr 3 06:09:51 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA28079; Mon, 31 Mar 97 11:11:56 EST Received: from owl.lcs.mit.edu by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA02815; Mon, 31 Mar 97 11:09:53 EST Message-Id: <199703311609.AA02815@owl.lcs.mit.edu> To: 6042-tas Subject: homework Date: Mon, 31 Mar 97 11:09:51 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-tas Subject: homework Date: Mon, 31 Mar 97 11:09:51 -0500 From: dimitrip@theory.lcs.mit.edu Hello, Some of my students are still missing some graded problem sets. If any of you has stray problem sets please put them in the 6042 locker. There is a yellow envelope in there for this purpose. Thanks, Dimitri  1,, Mail-from: From karger@theory.lcs.mit.edu Mon Apr 3 13:36:56 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA10212; Mon, 31 Mar 97 18:39:54 EST Received: by ibis (SMI-8.6/TOC-1.2C) id SAA16306; Mon, 31 Mar 1997 18:36:56 -0500 Date: Mon, 31 Mar 1997 18:36:56 -0500 Message-Id: <199703312336.SAA16306@ibis> From: "David R. Karger" To: 6042-forum Subject: problem sets *** EOOH *** Return-Path: Date: Mon, 31 Mar 1997 18:36:56 -0500 From: "David R. Karger" To: 6042-forum Subject: problem sets Just a reminder. Please deliver to us (in class tomorrow if possilbe) all past problem sets so that we can correct some discrepancies in the grading. We promise not to read the answers again; this is purely an issue of some inconsistent computations.  1,, Mail-from: From karger@theory.lcs.mit.edu Tue Apr 1 07:43:54 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA02008; Tue, 01 Apr 97 12:46:51 EST Received: by ibis (SMI-8.6/TOC-1.2C) id MAA18700; Tue, 1 Apr 1997 12:43:54 -0500 Date: Tue, 1 Apr 1997 12:43:54 -0500 Message-Id: <199704011743.MAA18700@ibis> From: "David R. Karger" To: 6042-forum Subject: no class *** EOOH *** Return-Path: Date: Tue, 1 Apr 1997 12:43:54 -0500 From: "David R. Karger" To: 6042-forum Subject: no class We all seem to have been granted a bit of an extension on our spring (?) break---Enjoy! Since there is no class today, the problem set will be due thursday. No late extension beyond that. The next problem set will also be handed out on thursday.  1,, Mail-from: From AshisGupta@aol.com Tue Apr 1 08:08:58 1997 Return-Path: Received: from emout14.mail.aol.com (emout14.mx.aol.com) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA02291; Tue, 01 Apr 97 13:08:59 EST Received: (from root@localhost) by emout14.mail.aol.com (8.7.6/8.7.3/AOL-2.0.0) id NAA14066; Tue, 1 Apr 1997 13:08:58 -0500 (EST) Date: Tue, 1 Apr 1997 13:08:58 -0500 (EST) From: AshisGupta@aol.com Message-Id: <970401130857_81376766@emout14.mail.aol.com> To: 6042-teachers@theory.lcs.mit.edu Cc: be@theory.lcs.mit.edu, karger@theory.lcs.mit.edu Subject: I'm not back until Thursday *** EOOH *** Return-Path: Date: Tue, 1 Apr 1997 13:08:58 -0500 (EST) From: AshisGupta@aol.com To: 6042-teachers@theory.lcs.mit.edu Cc: be@theory.lcs.mit.edu, karger@theory.lcs.mit.edu Subject: I'm not back until Thursday Hi, Delta cancelled my flight because of snow in Boston. Flights have been cancelled since yesterday, so there's a backlog. I was able to get rescheduled for Thursday afternoon. Can someone please cover for me at my 7:00pm tutorial tonight? If not, please send e-mail to the students and cancel it. Thanks. David Gupta  1,, Mail-from: From karger@theory.lcs.mit.edu Tue Apr 1 08:58:03 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA03312; Tue, 01 Apr 97 14:01:00 EST Received: by ibis (SMI-8.6/TOC-1.2C) id NAA18735; Tue, 1 Apr 1997 13:58:03 -0500 Date: Tue, 1 Apr 1997 13:58:03 -0500 Message-Id: <199704011858.NAA18735@ibis> From: "David R. Karger" To: AshisGupta@aol.com Cc: 6042-teachers@theory.lcs.mit.edu In-Reply-To: <970401130857_81376766@emout14.mail.aol.com> (AshisGupta@aol.com) Subject: Re: I'm not back until Thursday *** EOOH *** Return-Path: Date: Tue, 1 Apr 1997 13:58:03 -0500 From: "David R. Karger" To: AshisGupta@aol.com Cc: 6042-teachers@theory.lcs.mit.edu In-Reply-To: <970401130857_81376766@emout14.mail.aol.com> (AshisGupta@aol.com) Subject: Re: I'm not back until Thursday We can't wait any longer on the quiz. Someone MUST do David Gupta's grading in time for us to hand back by thursday. This person will be excused from grading the next quiz; David Gupta will do double duty on that quiz instead. Please send mail letting me know if you can do this. -d  1,, Mail-from: From tiuzzol@MIT.EDU Tue Apr 1 09:14:48 1997 Return-Path: Received: from MIT.EDU (PACIFIC-CARRIER-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA03476; Tue, 01 Apr 97 14:14:48 EST Received: from RINGWORLD.MIT.EDU by MIT.EDU with SMTP id AA18021; Tue, 1 Apr 97 14:14:34 EST Received: (from tiuzzol@localhost) by ringworld.MIT.EDU (8.6.11/8.6.11) id OAA00987 for 6042-forum@theory.lcs.mit.edu; Tue, 1 Apr 1997 14:14:48 -0500 Date: Tue, 1 Apr 1997 14:14:48 -0500 From: Terri Iuzzolino Message-Id: <199704011914.OAA00987@ringworld.MIT.EDU> To: 6042-forum@theory.lcs.mit.edu Subject: Tuesday tutorial *** EOOH *** Return-Path: Date: Tue, 1 Apr 1997 14:14:48 -0500 From: Terri Iuzzolino To: 6042-forum@theory.lcs.mit.edu Subject: Tuesday tutorial Needless to say, because of the snow, and also because Dave has been snowed out of Boston, the Tuesday 7pm tutorial tonight is cancelled. Terri  1,, Mail-from: From karger@theory.lcs.mit.edu Wed Apr 2 05:26:56 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA20425; Wed, 02 Apr 97 10:29:53 EST Received: by ibis (SMI-8.6/TOC-1.2C) id KAA20958; Wed, 2 Apr 1997 10:26:56 -0500 Date: Wed, 2 Apr 1997 10:26:56 -0500 Message-Id: <199704021526.KAA20958@ibis> From: "David R. Karger" To: 6042-tas Subject: quiz *** EOOH *** Return-Path: Date: Wed, 2 Apr 1997 10:26:56 -0500 From: "David R. Karger" To: 6042-tas Subject: quiz No one has responded to my request for someone to grade for David Gupta, so we go to plan two, which is what we should have done in the first place. Tonight, we all sit down and grade together. Please notify me if there is some reason you cannot come. Otherwise, I will expect you in my office at 8:00. -David  1,, Mail-from: From miccianc@theory.lcs.mit.edu Wed Apr 2 12:16:37 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA00471; Wed, 02 Apr 97 17:14:30 EST Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA08640; Wed, 02 Apr 97 17:16:37 EST Date: Wed, 02 Apr 97 17:16:37 EST Message-Id: <199704022216.AA08640@lark.lcs.mit.edu> From: Daniele Micciancio To: 6042-graders Subject: Orbanes Cc: 6042-teachers *** EOOH *** Return-Path: Date: Wed, 02 Apr 97 17:16:37 EST From: Daniele Micciancio To: 6042-graders Subject: Orbanes Cc: 6042-teachers While entering the quiz grades, I found out the the student Orbanes, who made the quiz, does not have an entry in the spreadsheet file. Has this student ever turned in any homework? Daniele.  1,, Mail-from: From AshisGupta@aol.com Wed Apr 2 13:26:30 1997 Return-Path: Received: from emout22.mail.aol.com (emout22.mx.aol.com) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA01858; Wed, 02 Apr 97 18:26:36 EST Received: (from root@localhost) by emout22.mail.aol.com (8.7.6/8.7.3/AOL-2.0.0) id SAA29112 for 6042-teachers@theory.lcs.mit.edu; Wed, 2 Apr 1997 18:26:30 -0500 (EST) Date: Wed, 2 Apr 1997 18:26:30 -0500 (EST) From: AshisGupta@aol.com Message-Id: <970402182309_1185817224@emout11.mail.aol.com> To: 6042-teachers@theory.lcs.mit.edu Subject: grading the quiz *** EOOH *** Return-Path: Date: Wed, 2 Apr 1997 18:26:30 -0500 (EST) From: AshisGupta@aol.com To: 6042-teachers@theory.lcs.mit.edu Subject: grading the quiz Hi, If this Friday is Drop Day, we'll definitely have to give the quiz back on Thursday. But as of 4:30am on Saturday March 22 when I left LCS, quiz grading as a whole wasn't very far along. If people are already hard pressed to get their allotments done by Thursday, I'd hate for someone to have to take on my load as well (even though problem 5 is easy to grade). If it's absolutely necessary for someone else to do my grading for me, they can ask Alex to forward them the message I sent her before I left. It explains how I have been grading problems 5 and 9. I'm sorry that the fact I'm not able to get back sooner is making more work for everyone. David  1,, Mail-from: From dimitrip@MIT.EDU Wed Apr 2 13:38:32 1997 Return-Path: Received: from MIT.EDU (SOUTH-STATION-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA02196; Wed, 02 Apr 97 18:38:33 EST Received: from M37-332-6.MIT.EDU by MIT.EDU with SMTP id AA28729; Wed, 2 Apr 97 18:38:33 EST From: dimitrip@MIT.EDU Received: by m37-332-6.MIT.EDU (5.x/4.7) id AA03642; Wed, 2 Apr 1997 18:38:33 -0500 Message-Id: <9704022338.AA03642@m37-332-6.MIT.EDU> To: 6042-tas@theory.lcs Cc: 6042-teachers@theory.lcs Subject: Kelly Chan Date: Wed, 02 Apr 1997 18:38:32 EST *** EOOH *** Return-Path: From: dimitrip@MIT.EDU To: 6042-tas@theory.lcs Cc: 6042-teachers@theory.lcs Subject: Kelly Chan Date: Wed, 02 Apr 1997 18:38:32 EST Hello, I found another person who's not on the grade spreadsheet. The name is Kelly K Chan. Does anybody know him/her? Dimitri  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Wed Apr 2 14:52:24 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA03154; Wed, 02 Apr 97 19:59:20 EST Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA01075; Wed, 02 Apr 97 19:52:28 EST Message-Id: <199704030052.AA01075@phoinix.lcs.mit.edu> To: karger Cc: 6042-tas Subject: missing page Date: Wed, 02 Apr 97 19:52:24 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: karger Cc: 6042-tas Subject: missing page Date: Wed, 02 Apr 97 19:52:24 -0500 From: dimitrip@theory.lcs.mit.edu Hello, I remembered that when I was grading I found a quiz whose last page was missing. When I was proctoring, I asked the students to count the pages but some of them walked in late and did not hear the warning. I don't know what we should do about it. The quiz is in a yellow folder at the bottom of the quiz box in your office. Dimitri  1,, Mail-from: From tiuzzol@MIT.EDU Wed Apr 2 17:00:46 1997 Return-Path: Received: from MIT.EDU (SOUTH-STATION-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA04605; Wed, 02 Apr 97 22:00:58 EST Received: from BART-SAVAGEWOOD.MIT.EDU by MIT.EDU with SMTP id AA05662; Wed, 2 Apr 97 22:00:47 EST From: tiuzzol@MIT.EDU Received: by bart-savagewood.MIT.EDU (5.x/4.7) id AA13200; Wed, 2 Apr 1997 22:00:46 -0500 Date: Wed, 2 Apr 1997 22:00:46 -0500 Message-Id: <9704030300.AA13200@bart-savagewood.MIT.EDU> To: 6042-teachers@theory.lcs.mit.edu, AshisGupta@aol.com Subject: Re: grading the quiz *** EOOH *** Return-Path: From: tiuzzol@MIT.EDU Date: Wed, 2 Apr 1997 22:00:46 -0500 To: 6042-teachers@theory.lcs.mit.edu, AshisGupta@aol.com Subject: Re: grading the quiz This friday is not drop day. apparently it's the 24th of April.  1,, Mail-from: From karger@theory.lcs.mit.edu Wed Apr 2 17:36:36 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA05411; Wed, 02 Apr 97 22:39:34 EST From: karger@theory.lcs.mit.edu (David R. Karger) Received: by ibis (SMI-8.6/TOC-1.2C) id WAA21702; Wed, 2 Apr 1997 22:36:36 -0500 Date: Wed, 2 Apr 1997 22:36:36 -0500 Message-Id: <199704030336.WAA21702@ibis> To: 6042-teachers@theory.lcs.mit.edu, AshisGupta@aol.com, tiuzzol@MIT.EDU Subject: Re: grading the quiz *** EOOH *** Return-Path: From: karger@theory.lcs.mit.edu (David R. Karger) Date: Wed, 2 Apr 1997 22:36:36 -0500 To: 6042-teachers@theory.lcs.mit.edu, AshisGupta@aol.com, tiuzzol@MIT.EDU Subject: Re: grading the quiz Drop date may be later, but I'd like to let the students know how they are doing sooner.  1,, Mail-from: From tiuzzol@MIT.EDU Wed Apr 2 21:04:01 1997 Return-Path: Received: from MIT.EDU (SOUTH-STATION-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA07768; Thu, 03 Apr 97 02:04:04 EST Received: from TEST-SPARC4.MIT.EDU by MIT.EDU with SMTP id AA07705; Thu, 3 Apr 97 02:04:03 EST From: tiuzzol@MIT.EDU Received: by test-sparc4.MIT.EDU (5.x/4.7) id AA20101; Thu, 3 Apr 1997 02:04:01 -0500 Date: Thu, 3 Apr 1997 02:04:01 -0500 Message-Id: <9704030704.AA20101@test-sparc4.MIT.EDU> To: dimitrip@theory.lcs.mit.edu, karger@theory.lcs.mit.edu Subject: Re: missing page Cc: 6042-tas@theory.lcs.mit.edu *** EOOH *** Return-Path: From: tiuzzol@MIT.EDU Date: Thu, 3 Apr 1997 02:04:01 -0500 To: dimitrip@theory.lcs.mit.edu, karger@theory.lcs.mit.edu Subject: Re: missing page Cc: 6042-tas@theory.lcs.mit.edu Grades for the tests I am in possession of have been entered. In looking through the grades, I noticed that there are about 10 people who definitely took the test, but whose grades have not been entered. At least two of them were in the "still something other than 5 and 9 left to grade pile." Did that pile make it into the hands of the people who had stuff left to grade? Terri  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Thu Apr 3 06:46:45 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA15460; Thu, 03 Apr 97 11:48:52 EST Received: from owl.lcs.mit.edu by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA01089; Thu, 03 Apr 97 11:46:48 EST Message-Id: <199704031646.AA01089@owl.lcs.mit.edu> To: 6042-teachers Subject: unclaimed problem sets Date: Thu, 03 Apr 97 11:46:45 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-teachers Subject: unclaimed problem sets Date: Thu, 03 Apr 97 11:46:45 -0500 From: dimitrip@theory.lcs.mit.edu Hello Terri and David, Please bring any unclaimed problem sets that you have in the staff meeting today. Thanks, Dimitri  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Thu Apr 3 14:29:32 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA26110; Thu, 03 Apr 97 19:36:22 EST Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA02911; Thu, 03 Apr 97 19:29:33 EST Message-Id: <199704040029.AA02911@phoinix.lcs.mit.edu> To: 6042-students Cc: 6042-teachers Subject: office hours Date: Thu, 03 Apr 97 19:29:32 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-students Cc: 6042-teachers Subject: office hours Date: Thu, 03 Apr 97 19:29:32 -0500 From: dimitrip@theory.lcs.mit.edu Hello, Next Monday I will be holding office hours 10am -12 noon. This change might become permanent. Dimitri  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Thu Apr 3 14:35:22 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA26219; Thu, 03 Apr 97 19:42:15 EST Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA02932; Thu, 03 Apr 97 19:35:25 EST Message-Id: <199704040035.AA02932@phoinix.lcs.mit.edu> To: 6042-forum Subject: office hours Date: Thu, 03 Apr 97 19:35:22 -0500 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-forum Subject: office hours Date: Thu, 03 Apr 97 19:35:22 -0500 From: dimitrip@theory.lcs.mit.edu Hello, Next Monday I will be holding office hours 10am -12 noon. This change might become permanent. Dimitri  1,, Mail-from: From tiuzzol@MIT.EDU Thu Apr 3 16:01:35 1997 Return-Path: Received: from MIT.EDU (SOUTH-STATION-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA27372; Thu, 03 Apr 97 21:01:36 EST Received: from RINGWORLD.MIT.EDU by MIT.EDU with SMTP id AA06779; Thu, 3 Apr 97 21:01:36 EST Received: (from tiuzzol@localhost) by ringworld.MIT.EDU (8.6.11/8.6.11) id VAA12514; Thu, 3 Apr 1997 21:01:35 -0500 Date: Thu, 3 Apr 1997 21:01:35 -0500 From: Terri Iuzzolino Message-Id: <199704040201.VAA12514@ringworld.MIT.EDU> To: 6042-tas@theory.lcs.mit.edu, dimitrip@theory.lcs.mit.edu Subject: Re: office hours *** EOOH *** Return-Path: Date: Thu, 3 Apr 1997 21:01:35 -0500 From: Terri Iuzzolino To: 6042-tas@theory.lcs.mit.edu, dimitrip@theory.lcs.mit.edu Subject: Re: office hours Ok. Note that Daniele has hours in the morning then too. If you permanently move them, we're going to be short on staff in the evenings espeically between 6 and 7. (We like you there in the evening!) Also, if I end up having to do another tutorial at 4pm on Monday, then I'd like to move office hours to 7-9pm. Anyways. We should probably figure out what's going on with tutorials since they will probably have a side effect on office hours. Terri  1,, Mail-from: From karger@theory.lcs.mit.edu Thu Apr 3 16:51:25 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA28154; Thu, 03 Apr 97 21:54:24 EST Received: by ibis (SMI-8.6/TOC-1.2C) id VAA23927; Thu, 3 Apr 1997 21:51:25 -0500 Date: Thu, 3 Apr 1997 21:51:25 -0500 Message-Id: <199704040251.VAA23927@ibis> From: "David R. Karger" To: 6042-forum Subject: more tutorials *** EOOH *** Return-Path: Date: Thu, 3 Apr 1997 21:51:25 -0500 From: "David R. Karger" To: 6042-forum Subject: more tutorials As I mentioned in class, many of you seem interested in smaller tutorials. Our kind TAs have volunteered, and I am arranging some tutorials for Monday at 4PM. How many depends on how many express an interest. If you would like to move to a M4 tutorial, please send mail to 6042-headta stating this fact.  1,, Mail-from: From karger@theory.lcs.mit.edu Fri Apr 4 02:23:32 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA05057; Fri, 04 Apr 97 07:26:31 EST Received: by ibis (SMI-8.6/TOC-1.2C) id HAA25067; Fri, 4 Apr 1997 07:23:32 -0500 Date: Fri, 4 Apr 1997 07:23:32 -0500 Message-Id: <199704041223.HAA25067@ibis> From: "David R. Karger" To: 6042-forum Subject: definitions *** EOOH *** Return-Path: Date: Fri, 4 Apr 1997 07:23:32 -0500 From: "David R. Karger" To: 6042-forum Subject: definitions You may notice that the text defines a simple path as one that uses each _edge_ at most once. We have chosen to define it as one that uses each _vertex_ at most once, and this is the definition you should use. There's a lot of disagreement about graph definitions---a path that uses each edge at most once is often called a "trail"---the only important rule is that everyone should pick a definition and stick with it. -d  1,, Mail-from: From miccianc@theory.lcs.mit.edu Fri Apr 4 06:53:30 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA09742; Fri, 04 Apr 97 11:51:21 EST Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA08978; Fri, 04 Apr 97 11:53:30 EST Date: Fri, 04 Apr 97 11:53:30 EST Message-Id: <199704041653.AA08978@lark.lcs.mit.edu> From: Daniele Micciancio To: 6042-tas, 6042-graders Subject: PSol7 *** EOOH *** Return-Path: Date: Fri, 04 Apr 97 11:53:30 EST From: Daniele Micciancio To: 6042-tas, 6042-graders Subject: PSol7 H21-Sol7 are ready. They are on the course web page. Daniele.  1,, Mail-from: From karger@theory.lcs.mit.edu Fri Apr 4 10:07:09 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA13981; Fri, 04 Apr 97 15:10:09 EST Received: by ibis (SMI-8.6/TOC-1.2C) id PAA25715; Fri, 4 Apr 1997 15:07:09 -0500 Date: Fri, 4 Apr 1997 15:07:09 -0500 Message-Id: <199704042007.PAA25715@ibis> From: "David R. Karger" To: 6042-forum Subject: cycles and circuits *** EOOH *** Return-Path: Date: Fri, 4 Apr 1997 15:07:09 -0500 From: "David R. Karger" To: 6042-forum Subject: cycles and circuits Just a reminder. As I mentioned before spring break, the term "cycle" is used as shorthand for "simple circuit", ie one with no repeated vertices. ------- Start of forwarded message ------- To: karger@MIT.EDU Subject: question Date: Fri, 04 Apr 1997 14:59:38 EST I just have a question concerning problems 6-8. I had the impression from the book that a cycle is the same thing as a circuit...thus when question 6 asked us to show iff for circuits and cycles I had no idea what it meant... I was wondering if you can clear that up for me....thanks ------- End of forwarded message -------  1,, Mail-from: From karger@theory.lcs.mit.edu Fri Apr 4 10:57:47 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA15252; Fri, 04 Apr 97 16:00:46 EST Received: by ibis (SMI-8.6/TOC-1.2C) id PAA25795; Fri, 4 Apr 1997 15:57:47 -0500 Date: Fri, 4 Apr 1997 15:57:47 -0500 Message-Id: <199704042057.PAA25795@ibis> From: "David R. Karger" To: 6042-forum Subject: homework *** EOOH *** Return-Path: Date: Fri, 4 Apr 1997 15:57:47 -0500 From: "David R. Karger" To: 6042-forum Subject: homework A clarification based on someone's confused question. Theorem 0.1 in the homework is what you _will_ prove. It is not something you can use to prove the homework problems!  1,, Mail-from: From miccianc@theory.lcs.mit.edu Fri Apr 4 11:36:31 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA16292; Fri, 04 Apr 97 16:34:22 EST Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA09029; Fri, 04 Apr 97 16:36:31 EST Date: Fri, 04 Apr 97 16:36:31 EST Message-Id: <199704042136.AA09029@lark.lcs.mit.edu> From: Daniele Micciancio To: 6042-forum Subject: Psol7 *** EOOH *** Return-Path: Date: Fri, 04 Apr 97 16:36:31 EST From: Daniele Micciancio To: 6042-forum Subject: Psol7 Solutions to problem set 7 are available on the course webpage. daniele.  1,, Mail-from: From karger@theory.lcs.mit.edu Fri Apr 4 13:04:58 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA18352; Fri, 04 Apr 97 18:07:58 EST Received: by ibis (SMI-8.6/TOC-1.2C) id SAA26324; Fri, 4 Apr 1997 18:04:58 -0500 Date: Fri, 4 Apr 1997 18:04:58 -0500 Message-Id: <199704042304.SAA26324@ibis> From: "David R. Karger" To: 6042-forum Subject: extra tutorial *** EOOH *** Return-Path: Date: Fri, 4 Apr 1997 18:04:58 -0500 From: "David R. Karger" To: 6042-forum Subject: extra tutorial Dimitri will hold an extra tutorial M at 4 in 34-302.  1,, Mail-from: From gupta@theory.lcs.mit.edu Fri Apr 4 15:32:21 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA20005; Fri, 04 Apr 97 20:34:25 EST From: gupta@theory.lcs.mit.edu (David Gupta) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA00501; Fri, 04 Apr 97 20:32:21 EST Date: Fri, 04 Apr 97 20:32:21 EST Message-Id: <199704050132.AA00501@owl.lcs.mit.edu> To: 6042-teachers Subject: quiz solutions *** EOOH *** Return-Path: From: gupta@theory.lcs.mit.edu (David Gupta) Date: Fri, 04 Apr 97 20:32:21 EST To: 6042-teachers Subject: quiz solutions Hi, If any of you fear being deluged by students who all are confused by the same point on one of the problems you graded, you might want to let me know to include a clarification of that point in the solutions. I'm planning on working on them on Sunday. We want to get them out in a hurry, so they may not be very polished, but it would still be a good idea to include some clarifications of confusing points. David  1,, Mail-from: From miccianc@theory.lcs.mit.edu Mon Apr 7 07:01:31 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA25343; Mon, 07 Apr 97 10:59:21 EDT Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA09418; Mon, 07 Apr 97 11:01:31 EDT Date: Mon, 07 Apr 97 11:01:31 EDT Message-Id: <199704071501.AA09418@lark.lcs.mit.edu> From: Daniele Micciancio To: 6042-forum Subject: PS8 clarification *** EOOH *** Return-Path: Date: Mon, 07 Apr 97 11:01:31 EDT From: Daniele Micciancio To: 6042-forum Subject: PS8 clarification Problem set 8, problem 4. To make it work you should interpret the sentence "node of degree k" as "node with k children". Daniele.  1,, Mail-from: From karger@theory.lcs.mit.edu Mon Apr 7 07:24:36 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA25963; Mon, 07 Apr 97 11:27:48 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id LAA01539; Mon, 7 Apr 1997 11:24:36 -0400 Date: Mon, 7 Apr 1997 11:24:36 -0400 Message-Id: <199704071524.LAA01539@ibis> From: "David R. Karger" To: miccianc@theory.lcs.mit.edu Cc: 6042-forum In-Reply-To: <199704071501.AA09418@lark.lcs.mit.edu> (message from Daniele Micciancio on Mon, 07 Apr 97 11:01:31 EDT) Subject: Re: PS8 clarification *** EOOH *** Return-Path: Date: Mon, 7 Apr 1997 11:24:36 -0400 From: "David R. Karger" To: miccianc@theory.lcs.mit.edu Cc: 6042-forum In-Reply-To: <199704071501.AA09418@lark.lcs.mit.edu> (message from Daniele Micciancio on Mon, 07 Apr 97 11:01:31 EDT) Subject: Re: PS8 clarification Please disregard Daniele's message. The problem refers to a "free" tree of the kind I discussed last lecture. Since it isn't rooted, there is no notion of parents or children. So degree k means degree k.  1,, Mail-from: From tiuzzol@MIT.EDU Mon Apr 7 15:42:14 1997 Return-Path: Received: from MIT.EDU (PACIFIC-CARRIER-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA06462; Mon, 07 Apr 97 19:42:15 EDT Received: from RINGWORLD.MIT.EDU by MIT.EDU with SMTP id AA22159; Mon, 7 Apr 97 18:41:57 EST Received: (from tiuzzol@localhost) by ringworld.MIT.EDU (8.6.11/8.6.11) id TAA24887 for 6042-forum@theory.lcs.mit.edu; Mon, 7 Apr 1997 19:42:14 -0400 Date: Mon, 7 Apr 1997 19:42:14 -0400 From: Terri Iuzzolino Message-Id: <199704072342.TAA24887@ringworld.MIT.EDU> To: 6042-forum@theory.lcs.mit.edu Subject: PS 8 *** EOOH *** Return-Path: Date: Mon, 7 Apr 1997 19:42:14 -0400 From: Terri Iuzzolino To: 6042-forum@theory.lcs.mit.edu Subject: PS 8 As you may have noticed, PS8 is due on Thursday. It's easier than past ones, so you should really finish it tonight. But in case you don't, I'll have office hours on Wednesday 10pm-midnight in NE43-3rd floor lounge. I'll answer questions individually (as opposed to the group answers we have on the boards on Monday), so please work on the pset before you come, and feel free to send TAs mail if you have questions.... Also, if you received your quiz in class last Thursday, got 7 or fewer points on problem 1 of your quiz OR if you got no points for your name (some of them were inadvertantly left blank), please bring in your quiz tomorrow at class, and give it to me at the beginning of class to regrade. I'll have finished grading it by the end. No one will lose points but you might get some. Note that if you either got your quiz handed back today, or if you received 3 or 4 points for your name, or >=8 points for problem 1, don't give me your test. Terri  1,, Mail-from: From tiuzzol@MIT.EDU Mon Apr 7 15:49:37 1997 Return-Path: Received: from MIT.EDU (SOUTH-STATION-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA06564; Mon, 07 Apr 97 19:49:38 EDT Received: from RINGWORLD.MIT.EDU by MIT.EDU with SMTP id AA07713; Mon, 7 Apr 97 19:49:38 EDT Received: (from tiuzzol@localhost) by ringworld.MIT.EDU (8.6.11/8.6.11) id TAA25663; Mon, 7 Apr 1997 19:49:37 -0400 Date: Mon, 7 Apr 1997 19:49:37 -0400 From: Terri Iuzzolino Message-Id: <199704072349.TAA25663@ringworld.MIT.EDU> To: 6042-graders@theory.lcs.mit.edu Subject: Grading Cc: 6042-teachers@theory.lcs.mit.edu *** EOOH *** Return-Path: Date: Mon, 7 Apr 1997 19:49:37 -0400 From: Terri Iuzzolino To: 6042-graders@theory.lcs.mit.edu Subject: Grading Cc: 6042-teachers@theory.lcs.mit.edu Hey guys. On multiple occasions I've gotten back problem sets that haven't been graded or haven't been totalled. Some of them had "Write your name clearly or else it won't be graded." at the top. GRADE ALL PROBLEM SETS! Even if they have _no_ name! Because if you don't, we're just going to hand them back to you to grade, and this is really annoying. If you can't read the name, then mark at the top that you were unable to enter the grade in the gradesheet. At least then the time to fix the problem will be one hour, not one week. Speaking of entering grades in the gradesheet.... Some people have been turning in homework, but their names weren't in the gradsheet, so no one has been entering grades for them. In situations like this do one of two things: 1. Start a new entry for them! 2. Mark on their sheet that their grade wasn't entered, and they should talk to a TA. Ok? It's a real pain to have to get the students to try and track down their last 6 problem sets because no one entered their grades. And with a little communication, we'll all know what's going on. Thanks. Terri  1,, Mail-from: From alexv@theory.lcs.mit.edu Tue Apr 8 14:32:23 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA00542; Tue, 08 Apr 97 18:34:30 EDT From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA01698; Tue, 08 Apr 97 18:32:23 EDT Date: Tue, 08 Apr 97 18:32:23 EDT Message-Id: <199704082232.AA01698@owl.lcs.mit.edu> To: 6042-tas *** EOOH *** Return-Path: From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Date: Tue, 08 Apr 97 18:32:23 EDT To: 6042-tas lexLecture 11 and Lecture 12 are they ready to be put on the web? -- Lect. 11: Dimitri Lect. 12: David  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Tue Apr 8 15:04:46 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA01337; Tue, 08 Apr 97 19:11:40 EDT Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA10556; Tue, 08 Apr 97 19:04:47 EDT Message-Id: <199704082304.AA10556@phoinix.lcs.mit.edu> To: alexv@theory.lcs.mit.edu (Alex Vasilescu) Cc: 6042-tas, dimitrip In-Reply-To: Your message of Tue, 08 Apr 97 18:32:23 -0400. <199704082232.AA01698@owl.lcs.mit.edu> Date: Tue, 08 Apr 97 19:04:46 -0400 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: alexv@theory.lcs.mit.edu (Alex Vasilescu) Cc: 6042-tas, dimitrip In-Reply-To: Your message of Tue, 08 Apr 97 18:32:23 -0400. <199704082232.AA01698@owl.lcs.mit.edu> Date: Tue, 08 Apr 97 19:04:46 -0400 From: dimitrip@theory.lcs.mit.edu Hey Alex, what's all this mail about lectures 11 & 12. As far as I know they've been on the web for ages (well, weeks). Dimitri ---------------------------------------------------- lexLecture 11 and Lecture 12 are they ready to be put on the web? -- Lect. 11: Dimitri Lect. 12: David  1,, Mail-from: From karger@theory.lcs.mit.edu Tue Apr 8 18:06:55 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA04375; Tue, 08 Apr 97 22:10:02 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id WAA04649; Tue, 8 Apr 1997 22:06:55 -0400 Date: Tue, 8 Apr 1997 22:06:55 -0400 Message-Id: <199704090206.WAA04649@ibis> From: "David R. Karger" To: 6042-forum Subject: lecture error *** EOOH *** Return-Path: Date: Tue, 8 Apr 1997 22:06:55 -0400 From: "David R. Karger" To: 6042-forum Subject: lecture error I've discovered some "writeos" in my closed form for the value of sum (i*x^i) in class today. The correct answer is in the notes which will go out thursday; I am bringing this error to your attention so it won't creep into your homework solutions.  1,, Mail-from: From alexv@theory.lcs.mit.edu Tue Apr 8 18:24:09 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA04752; Tue, 08 Apr 97 22:26:15 EDT From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA01730; Tue, 08 Apr 97 22:24:09 EDT Date: Tue, 08 Apr 97 22:24:09 EDT Message-Id: <199704090224.AA01730@owl.lcs.mit.edu> To: 6042-teachers *** EOOH *** Return-Path: From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Date: Tue, 08 Apr 97 22:24:09 EDT To: 6042-teachers Exam problems submitted for regrades should be regraded by the person who graded the problem in question originally. (Say that three times!) Cheers, Alex. Exam Problems were graded as follows: Problem 1: Terri Problem 2: Alex Problem 3: Dimitri Problem 4: Alex Problem 5: David Gupta Problem 6: Terri Problem 7: David Karger Problem 8: Daniele Problem 9: David Gupta Problem 10: Dimitri, Danielle  1,, Mail-from: From karger@theory.lcs.mit.edu Tue Apr 8 21:24:19 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA07076; Wed, 09 Apr 97 01:27:22 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id BAA04848; Wed, 9 Apr 1997 01:24:19 -0400 Date: Wed, 9 Apr 1997 01:24:19 -0400 Message-Id: <199704090524.BAA04848@ibis> From: "David R. Karger" To: 6042-forum Subject: pset 9 *** EOOH *** Return-Path: Date: Wed, 9 Apr 1997 01:24:19 -0400 From: "David R. Karger" To: 6042-forum Subject: pset 9 Handout 23, problem set 9, is now on the web. It will be handed out in class thursday.  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Wed Apr 9 12:48:41 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA23356; Wed, 09 Apr 97 16:55:36 EDT Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA11998; Wed, 09 Apr 97 16:48:42 EDT Message-Id: <199704092048.AA11998@phoinix.lcs.mit.edu> To: 6042-forum Cc: dimitrip Subject: 4pm tutorial Date: Wed, 09 Apr 97 16:48:41 -0400 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-forum Cc: dimitrip Subject: 4pm tutorial Date: Wed, 09 Apr 97 16:48:41 -0400 From: dimitrip@theory.lcs.mit.edu Hello, Only one person showed up for the 4pm tutorial last Monday. Those of you who are still interested in a 4pm tutorial please send mail to dimitrip@theory.lcs. Dimitri  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Wed Apr 9 12:53:32 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA23484; Wed, 09 Apr 97 17:00:27 EDT Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA12021; Wed, 09 Apr 97 16:53:34 EDT Message-Id: <199704092053.AA12021@phoinix.lcs.mit.edu> To: 6042-teachers Subject: missing homework Date: Wed, 09 Apr 97 16:53:32 -0400 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-teachers Subject: missing homework Date: Wed, 09 Apr 97 16:53:32 -0400 From: dimitrip@theory.lcs.mit.edu Hello Terri and David, Please bring any unclaimed problem sets that you have in the staff meeting tomorrow. Thanks, Dimitri  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Wed Apr 9 13:00:41 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA23689; Wed, 09 Apr 97 17:07:35 EDT Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA12038; Wed, 09 Apr 97 17:00:41 EDT Message-Id: <199704092100.AA12038@phoinix.lcs.mit.edu> To: 6042-tas Subject: missing exam Date: Wed, 09 Apr 97 17:00:41 -0400 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-tas Subject: missing exam Date: Wed, 09 Apr 97 17:00:41 -0400 From: dimitrip@theory.lcs.mit.edu Hello, One of my students, Theodore Arvizo, never got his quiz back. Those of you who took quizes home for grading please look very carefully for it. One of you must still have it because the grade was entered. Thanks, Dimitri  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Wed Apr 9 14:13:03 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA24981; Wed, 09 Apr 97 18:19:59 EDT Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA12151; Wed, 09 Apr 97 18:13:05 EDT Message-Id: <199704092213.AA12151@phoinix.lcs.mit.edu> To: 6042-tas Cc: karger, 6042-graders Subject: missing homework Date: Wed, 09 Apr 97 18:13:03 -0400 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-tas Cc: karger, 6042-graders Subject: missing homework Date: Wed, 09 Apr 97 18:13:03 -0400 From: dimitrip@theory.lcs.mit.edu Hello, The reason I keep asking you to bring unclaimed homework to the meetings is because I have a student who is missing two problem sets. If you have them please let me know. Dimitri ---------------------------------------------------------------------- Dimitri, Could you look again for PS 4 and 5 of mine which I turned in. What happens if you can't find them? Dean Bolton ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | | | //|\\ | | DEAN BOLTON | THETA XI FRATERNITY | // \\ /////// | | 64 BAY STATE ROAD | CLASS OF 1999 | (( /// )) | | BOSTON, MA 02215 | Delta 991 | \\ // //// | | (617) 266-2827 | DBOLTON@MIT.EDU | \\|// | | | | /////// | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ------- End of Forwarded Message  1,, Mail-from: From tiuzzol@MIT.EDU Wed Apr 9 14:24:12 1997 Return-Path: Received: from MIT.EDU (SOUTH-STATION-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA25059; Wed, 09 Apr 97 18:24:23 EDT Received: from RINGWORLD.MIT.EDU by MIT.EDU with SMTP id AA06539; Wed, 9 Apr 97 18:24:23 EDT Received: (from tiuzzol@localhost) by ringworld.MIT.EDU (8.6.11/8.6.11) id SAA12103 for 6042-forum@theory.lcs.mit.edu; Wed, 9 Apr 1997 18:24:12 -0400 Date: Wed, 9 Apr 1997 18:24:12 -0400 From: Terri Iuzzolino Message-Id: <199704092224.SAA12103@ringworld.MIT.EDU> To: 6042-forum@theory.lcs.mit.edu Subject: Quiz 1 regrades *** EOOH *** Return-Path: Date: Wed, 9 Apr 1997 18:24:12 -0400 From: Terri Iuzzolino To: 6042-forum@theory.lcs.mit.edu Subject: Quiz 1 regrades So, it looks like Professor Karger has decided to give some more of you a lucky break on problem 1 of the quiz. For those of you who solved the problem 1 as (1^3 + 2^3 + ... + n^3) = (1 + 1 + ... + n)^2 bring in your problems to be regraded. Please give them to me at the _beginning_ of lecture, and they'll be ready by the end. Thanks! Terri  1,, Mail-from: From karger@theory.lcs.mit.edu Wed Apr 9 20:16:58 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA03132; Thu, 10 Apr 97 00:20:01 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id AAA06741; Thu, 10 Apr 1997 00:16:58 -0400 Date: Thu, 10 Apr 1997 00:16:58 -0400 Message-Id: <199704100416.AAA06741@ibis> From: "David R. Karger" To: 6042-forum Subject: [lfrench@MIT.EDU: 6042 PS] *** EOOH *** Return-Path: Date: Thu, 10 Apr 1997 00:16:58 -0400 From: "David R. Karger" To: 6042-forum Subject: [lfrench@MIT.EDU: 6042 PS] Some answers ------- Start of forwarded message ------- To: karger@MIT.EDU Subject: 6042 PS Date: Wed, 09 Apr 1997 23:59:20 EDT First, in problem 3, can you explain the second part of the problem (how many paths...)? How many answers are we supposed to have? Since the graph is symmetric, the answer is the same for all the non-center vertices. Also, in problem 5, is the graph undirected? yes ------- End of forwarded message -------  1,, Mail-from: From gupta@theory.lcs.mit.edu Wed Apr 9 20:20:15 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA03173; Thu, 10 Apr 97 00:22:22 EDT From: gupta@theory.lcs.mit.edu (David Gupta) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA02363; Thu, 10 Apr 97 00:20:15 EDT Date: Thu, 10 Apr 97 00:20:15 EDT Message-Id: <199704100420.AA02363@owl.lcs.mit.edu> To: 6042-teachers Subject: comments for Quiz 1 solutions *** EOOH *** Return-Path: From: gupta@theory.lcs.mit.edu (David Gupta) Date: Thu, 10 Apr 97 00:20:15 EDT To: 6042-teachers Subject: comments for Quiz 1 solutions Hi, I haven't received many points people wanted brought out in the quiz solutions. If you have some that you haven't sent, please send them soon. The solutions are supposed to go out tomorrow. David  1,, Mail-from: From karger@theory.lcs.mit.edu Wed Apr 9 20:23:42 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA03246; Thu, 10 Apr 97 00:26:46 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id AAA06758; Thu, 10 Apr 1997 00:23:42 -0400 Date: Thu, 10 Apr 1997 00:23:42 -0400 Message-Id: <199704100423.AAA06758@ibis> From: "David R. Karger" To: 6042-forum Subject: Re: problem 6 *** EOOH *** Return-Path: Date: Thu, 10 Apr 1997 00:23:42 -0400 From: "David R. Karger" To: 6042-forum Subject: Re: problem 6 Date: Thu, 10 Apr 1997 00:23:47 -0400 hope i catch you: on problem 6, what's the difference between a cycle and circuit? the book defines them as the same on page 465 As discussed in lecture and notes, I am using different definitions from the book. circut: any sequence of vertices connected by edges that ends up back at the starting vertex cycle: a circuit with no repeated vertices In other words, cycle is to circuit as simple path is to path.  1,, Mail-from: From gupta@theory.lcs.mit.edu Thu Apr 10 00:50:47 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA06869; Thu, 10 Apr 97 04:52:54 EDT From: gupta@theory.lcs.mit.edu (David Gupta) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA02500; Thu, 10 Apr 97 04:50:47 EDT Date: Thu, 10 Apr 97 04:50:47 EDT Message-Id: <199704100850.AA02500@owl.lcs.mit.edu> To: 6042-teachers Subject: quiz 1 solutions *** EOOH *** Return-Path: From: gupta@theory.lcs.mit.edu (David Gupta) Date: Thu, 10 Apr 97 04:50:47 EDT To: 6042-teachers Subject: quiz 1 solutions Hi, A draft of quiz 1 solutions is in the handouts directory. Everyone please try to check that the solutions to the problems they graded would have gotten full credit. They're still fairly rough. Some pictures are missing. There are some formatting problems. Also, giving it a handout number seems to stop me from LaTeX-ing the file. It's checked into RCS, and any help anyone can give would be appreciated. David  1,, Mail-from: From karger@theory.lcs.mit.edu Thu Apr 10 14:32:10 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA22583; Thu, 10 Apr 97 18:35:15 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id SAA08437; Thu, 10 Apr 1997 18:32:10 -0400 Date: Thu, 10 Apr 1997 18:32:10 -0400 Message-Id: <199704102232.SAA08437@ibis> From: "David R. Karger" To: 6042-forum Subject: quiz preparations *** EOOH *** Return-Path: Date: Thu, 10 Apr 1997 18:32:10 -0400 From: "David R. Karger" To: 6042-forum Subject: quiz preparations The current plan is as follows. I will hand out a problem set next tuesday. It will also serve as a review set/practice quiz for the exam (it will be different from the quiz in that it is likely to take more than 2 hours). It will be due at the recitation which will be held Tuesday night, the day before the exam. At that recitation, solutions to the set will be handed out and the TAs will go over the solutions and answer general questions. There will be no homework due the following Tuesday. Tuesday before the exam is patriot's day as well as the second seder night of passover. If this or other issues such as travel prevent you from attending the review session or handing in the problem set on time, send mail to 6042-headta. Send the mail EARLY so that alternate arrangements can be made. Also, if you have any major objections to the plan as currently given, send mail directly to me. -David Karger  1,, Mail-from: From gupta@theory.lcs.mit.edu Thu Apr 10 16:01:36 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA23934; Thu, 10 Apr 97 20:03:43 EDT From: gupta@theory.lcs.mit.edu (David Gupta) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA02941; Thu, 10 Apr 97 20:01:36 EDT Date: Thu, 10 Apr 97 20:01:36 EDT Message-Id: <199704110001.AA02941@owl.lcs.mit.edu> To: 6042-teachers Subject: homework and quiz 2 problems *** EOOH *** Return-Path: From: gupta@theory.lcs.mit.edu (David Gupta) Date: Thu, 10 Apr 97 20:01:36 EDT To: 6042-teachers Subject: homework and quiz 2 problems Hi, The plan has changed. Since problems should be written differently based on whether they will be on the homework or the quiz, you should generate two distinct collections of questions instead of the double collection of homework problems described in the staff meeting. The homework problems should be submitted to David Karger by Saturday night as usual (on both current and older topics, as discussed in the staff meeting and as we have divided them up). You should also send a set of problems for quiz 2 (on the same topics) to me. David  1,, Mail-from: From gupta@theory.lcs.mit.edu Thu Apr 10 16:50:46 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA24471; Thu, 10 Apr 97 20:52:53 EDT From: gupta@theory.lcs.mit.edu (David Gupta) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA02967; Thu, 10 Apr 97 20:50:46 EDT Date: Thu, 10 Apr 97 20:50:46 EDT Message-Id: <199704110050.AA02967@owl.lcs.mit.edu> To: 6042-teachers Subject: pictures for quiz 1 solutions *** EOOH *** Return-Path: From: gupta@theory.lcs.mit.edu (David Gupta) Date: Thu, 10 Apr 97 20:50:46 EDT To: 6042-teachers Subject: pictures for quiz 1 solutions Hi, Will whoever makes copies of quiz 1 solutions be sure to add the answers to 4a and 7a to the original by hand? It just involves marking points on the grid and drawing a few full binary trees. Thanks. David  1,, Mail-from: From karger@theory.lcs.mit.edu Fri Apr 11 04:55:06 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA02296; Fri, 11 Apr 97 08:58:11 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id IAA09979; Fri, 11 Apr 1997 08:55:06 -0400 Date: Fri, 11 Apr 1997 08:55:06 -0400 Message-Id: <199704111255.IAA09979@ibis> From: "David R. Karger" To: 6042-forum Subject: tutorials *** EOOH *** Return-Path: Date: Fri, 11 Apr 1997 08:55:06 -0400 From: "David R. Karger" To: 6042-forum Subject: tutorials Based on our discussion in class, I propose that we had an extra tutorial at each of 1,2, and 3PM on Monday. This will only work, of course, if some people or groups are willing to move to the new tutorial (which will be led by a different TA). If you are willing to move, send mail with your tutorial time and TA (in the following example format: 1 Gupta for a 1PM with David Gupta). If we get enough positive responses, we will schedule the extra tutorials. -David Karger  1,, Mail-from: From karger@theory.lcs.mit.edu Fri Apr 11 09:30:41 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA07671; Fri, 11 Apr 97 13:33:45 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id NAA10198; Fri, 11 Apr 1997 13:30:41 -0400 Date: Fri, 11 Apr 1997 13:30:41 -0400 Message-Id: <199704111730.NAA10198@ibis> From: "David R. Karger" To: 6042-forum Subject: Tutorial changes *** EOOH *** Return-Path: Date: Fri, 11 Apr 1997 13:30:41 -0400 From: "David R. Karger" To: 6042-forum Subject: Tutorial changes I left out on my last mail: if you can change tutorials, send your info to 6042-headta.  1,, Mail-from: From zia@MIT.EDU Sat Apr 12 14:07:01 1997 Return-Path: Received: from MIT.EDU (SOUTH-STATION-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA24472; Sat, 12 Apr 97 18:07:01 EDT Received: from M2-032-12.MIT.EDU by MIT.EDU with SMTP id AA17987; Sat, 12 Apr 97 18:07:02 EDT Received: by m2-032-12.MIT.EDU (5.x/4.7) id AA19897; Sat, 12 Apr 1997 18:07:01 -0400 Message-Id: <9704122207.AA19897@m2-032-12.MIT.EDU> To: 6042-tas@theory.lcs Subject: solutions Date: Sat, 12 Apr 1997 18:07:01 EDT From: Zia Ahmed *** EOOH *** Return-Path: To: 6042-tas@theory.lcs Subject: solutions Date: Sat, 12 Apr 1997 18:07:01 EDT From: Zia Ahmed Hi, When will the solutions to the latest problem set be available? They are not on the web page. thanks, Zia  1,, Mail-from: From tiuzzol@MIT.EDU Sat Apr 12 14:20:04 1997 Return-Path: Received: from MIT.EDU (SOUTH-STATION-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA24639; Sat, 12 Apr 97 18:20:05 EDT Received: from RINGWORLD.MIT.EDU by MIT.EDU with SMTP id AA19500; Sat, 12 Apr 97 18:20:05 EDT Received: (from tiuzzol@localhost) by ringworld.MIT.EDU (8.6.11/8.6.11) id SAA12411; Sat, 12 Apr 1997 18:20:04 -0400 Date: Sat, 12 Apr 1997 18:20:04 -0400 From: Terri Iuzzolino Message-Id: <199704122220.SAA12411@ringworld.MIT.EDU> To: 6042-graders@theory.lcs.mit.edu, 6042-tas@theory.lcs.MIT.EDU, zia@MIT.EDU Subject: Re: solutions *** EOOH *** Return-Path: Date: Sat, 12 Apr 1997 18:20:04 -0400 From: Terri Iuzzolino To: 6042-graders@theory.lcs.mit.edu, 6042-tas@theory.lcs.MIT.EDU, zia@MIT.EDU Subject: Re: solutions At first glance, it appears that ps9 solutinos haven't been started. (unless someone says otherwise) I think you can assume the psets don't need to be graded by Monday this week. Terri  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Sun Apr 13 12:00:03 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA07203; Sun, 13 Apr 97 15:59:05 EDT Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA19509; Sun, 13 Apr 97 16:00:04 EDT Message-Id: <199704132000.AA19509@peacock.lcs.mit.edu> To: 6042-forum Cc: 6042-teachers Subject: extra tutorial Date: Sun, 13 Apr 97 16:00:03 -0400 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-forum Cc: 6042-teachers Subject: extra tutorial Date: Sun, 13 Apr 97 16:00:03 -0400 From: dimitrip@theory.lcs.mit.edu Hello, The Monday 4pm tutorial has been cancelled. Dimitri  1,, Mail-from: From gupta@theory.lcs.mit.edu Sun Apr 13 15:20:09 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA09721; Sun, 13 Apr 97 19:22:18 EDT From: gupta@theory.lcs.mit.edu (David Gupta) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA03655; Sun, 13 Apr 97 19:20:09 EDT Date: Sun, 13 Apr 97 19:20:09 EDT Message-Id: <199704132320.AA03655@owl.lcs.mit.edu> To: 6042-tas Subject: past homework extensions (or lack thereof)? *** EOOH *** Return-Path: From: gupta@theory.lcs.mit.edu (David Gupta) Date: Sun, 13 Apr 97 19:20:09 EDT To: 6042-tas Subject: past homework extensions (or lack thereof)? Hi, I've gotten a couple of requests for homework extensions and would like to make sure I'm consistent with what the rest of you have been doing. Could you give me some idea what extensions you've granted and what requests you've denied (and why)? David  1,, Mail-from: From gupta@theory.lcs.mit.edu Sun Apr 13 15:48:55 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA10065; Sun, 13 Apr 97 19:51:04 EDT From: gupta@theory.lcs.mit.edu (David Gupta) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA03710; Sun, 13 Apr 97 19:48:55 EDT Date: Sun, 13 Apr 97 19:48:55 EDT Message-Id: <199704132348.AA03710@owl.lcs.mit.edu> To: 6042-forum Subject: old problem sets *** EOOH *** Return-Path: From: gupta@theory.lcs.mit.edu (David Gupta) Date: Sun, 13 Apr 97 19:48:55 EDT To: 6042-forum Subject: old problem sets Hello all, Please remember to bring any old problem sets that you still haven't given back for re-totalling to tutorial on Monday. David G.  1,, Mail-from: From gupta@theory.lcs.mit.edu Sun Apr 13 15:50:57 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA10111; Sun, 13 Apr 97 19:53:06 EDT From: gupta@theory.lcs.mit.edu (David Gupta) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA03714; Sun, 13 Apr 97 19:50:57 EDT Date: Sun, 13 Apr 97 19:50:57 EDT Message-Id: <199704132350.AA03714@owl.lcs.mit.edu> To: 6042-forum Subject: revised lecture 14 notes *** EOOH *** Return-Path: From: gupta@theory.lcs.mit.edu (David Gupta) Date: Sun, 13 Apr 97 19:50:57 EDT To: 6042-forum Subject: revised lecture 14 notes Hello all, The version of the lecture notes for lecture 14 is slightly revised from what was handed out in recitation. In particular it contains a few more definitions in its final section. (This section wasn't in the version handed out in recitation). David G.  1,, Mail-from: From karger@theory.lcs.mit.edu Sun Apr 13 16:56:53 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA11115; Sun, 13 Apr 97 21:00:00 EDT From: karger@theory.lcs.mit.edu (David R. Karger) Received: by ibis (SMI-8.6/TOC-1.2C) id UAA16166; Sun, 13 Apr 1997 20:56:53 -0400 Date: Sun, 13 Apr 1997 20:56:53 -0400 Message-Id: <199704140056.UAA16166@ibis> To: 6042-forum Subject: typo on problem 1 *** EOOH *** Return-Path: From: karger@theory.lcs.mit.edu (David R. Karger) Date: Sun, 13 Apr 1997 20:56:53 -0400 To: 6042-forum Subject: typo on problem 1 The problem set due tuesday has a typo that makes problem 1(b) impossible. The correction: there are 22 teams, not 21. You might want to think about why 21 teams makes 1(b) impossible...  1,, Mail-from: From karger@theory.lcs.mit.edu Sun Apr 13 17:16:41 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA11420; Sun, 13 Apr 97 21:19:48 EDT From: karger@theory.lcs.mit.edu (David R. Karger) Received: by ibis (SMI-8.6/TOC-1.2C) id VAA16222; Sun, 13 Apr 1997 21:16:41 -0400 Date: Sun, 13 Apr 1997 21:16:41 -0400 Message-Id: <199704140116.VAA16222@ibis> To: 6042-forum Subject: notes 16 *** EOOH *** Return-Path: From: karger@theory.lcs.mit.edu (David R. Karger) Date: Sun, 13 Apr 1997 21:16:41 -0400 To: 6042-forum Subject: notes 16 a draft of notes 16 on recurrences is on the web. A corrected version will be handed out in class, but the draft is there in case you want to peek at the material on recurrences. That material is covered fully in the book, though.  1,, Mail-from: From karger@theory.lcs.mit.edu Sun Apr 13 21:58:42 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA14638; Mon, 14 Apr 97 02:01:49 EDT From: karger@theory.lcs.mit.edu (David R. Karger) Received: by ibis (SMI-8.6/TOC-1.2C) id BAA17140; Mon, 14 Apr 1997 01:58:42 -0400 Date: Mon, 14 Apr 1997 01:58:42 -0400 Message-Id: <199704140558.BAA17140@ibis> To: 6042-forum Subject: makeup quiz *** EOOH *** Return-Path: From: karger@theory.lcs.mit.edu (David R. Karger) Date: Mon, 14 Apr 1997 01:58:42 -0400 To: 6042-forum Subject: makeup quiz Just a reminder: if your schedule (eg passover) prevents you from being ready for the quiz on wednsday evening, make sure to contact 6042-headta so that we can arrange a makeup exam time.  1,, Mail-from: From karger@theory.lcs.mit.edu Mon Apr 14 06:32:43 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA21835; Mon, 14 Apr 97 10:35:51 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id KAA18457; Mon, 14 Apr 1997 10:32:43 -0400 Date: Mon, 14 Apr 1997 10:32:43 -0400 Message-Id: <199704141432.KAA18457@ibis> From: "David R. Karger" To: 6042-forum Subject: PS 9 *** EOOH *** Return-Path: Date: Mon, 14 Apr 1997 10:32:43 -0400 From: "David R. Karger" To: 6042-forum Subject: PS 9 ------- Start of forwarded message ------- Date: Sun, 13 Apr 1997 16:12:10 -0400 To: "David R. Karger" Subject: PS 9 Are we assuming in problem 10 that n is a power of two? Or are we treating T(n/2) as T([n/2])? ------- End of forwarded message ------- For simplicity, you may assume $n$ is a power of 2.  1,, Mail-from: From karger@theory.lcs.mit.edu Mon Apr 14 06:35:22 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA22148; Mon, 14 Apr 97 10:38:30 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id KAA18463; Mon, 14 Apr 1997 10:35:22 -0400 Date: Mon, 14 Apr 1997 10:35:22 -0400 Message-Id: <199704141435.KAA18463@ibis> From: "David R. Karger" To: 6042-forum Subject: pset 9 *** EOOH *** Return-Path: Date: Mon, 14 Apr 1997 10:35:22 -0400 From: "David R. Karger" To: 6042-forum Subject: pset 9 ------- Start of forwarded message ------- Date: Mon, 14 Apr 1997 00:30:00 -0400 To: karger@theory.lcs.mit.edu (David R. Karger) Subject: Re: typo on problem 1 There is a very simple solution where all the teams are simply paired up and only play each other, in which case both parts of the question are trivial. Is that an acceptable solution, since it fully proves the possibility of scheduling the games? Thanks, ------- End of forwarded message ------- Note that as stated, problem 1 does not allow you to specify the 14 teams a team has to play. It only allows you to specify when/where the games are played.  1,, Mail-from: From karger@theory.lcs.mit.edu Mon Apr 14 06:53:32 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA22804; Mon, 14 Apr 97 10:56:44 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id KAA18512; Mon, 14 Apr 1997 10:53:32 -0400 Date: Mon, 14 Apr 1997 10:53:32 -0400 Message-Id: <199704141453.KAA18512@ibis> From: "David R. Karger" To: 6042-forum Subject: [achakra@MIT.EDU: Problem 1] *** EOOH *** Return-Path: Date: Mon, 14 Apr 1997 10:53:32 -0400 From: "David R. Karger" To: 6042-forum Subject: [achakra@MIT.EDU: Problem 1] ------- Start of forwarded message ------- Date: Mon, 14 Apr 1997 10:54:09 -0400 To: karger@theory.lcs.mit.edu Subject: Problem 1 Do we assume 21 teams for Problem 1a and 22 teams for Problem 1b? Or do we assume 22 teams for both parts? ------- End of forwarded message ------- You can assume 22 teams for both parts (though for part a, it doesn't matter).  1,, Mail-from: From karger@theory.lcs.mit.edu Tue Apr 15 17:33:46 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA19676; Tue, 15 Apr 97 21:36:54 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id VAA22504; Tue, 15 Apr 1997 21:33:46 -0400 Date: Tue, 15 Apr 1997 21:33:46 -0400 Message-Id: <199704160133.VAA22504@ibis> From: "David R. Karger" To: 6042-forum Subject: revised plan *** EOOH *** Return-Path: Date: Tue, 15 Apr 1997 21:33:46 -0400 From: "David R. Karger" To: 6042-forum Subject: revised plan For those of you not in class today, I made a small change in the plan I posted: the practice exam is NOT graded. You don't have to turn it in. It will be gone over in the review section. Instread, there will be a graded pset handed out this thursday, due april 29.  1,, Mail-from: From karger@theory.lcs.mit.edu Tue Apr 15 17:35:17 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA19722; Tue, 15 Apr 97 21:38:24 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id VAA22508; Tue, 15 Apr 1997 21:35:17 -0400 Date: Tue, 15 Apr 1997 21:35:17 -0400 Message-Id: <199704160135.VAA22508@ibis> From: "David R. Karger" To: 6042-forum Subject: review sections *** EOOH *** Return-Path: Date: Tue, 15 Apr 1997 21:35:17 -0400 From: "David R. Karger" To: 6042-forum Subject: review sections Review sections will be held in 3-270 on 4/22 from 5-7 and from 7-9. They will cover the review exam and any questions it generates.  1,, Mail-from: From karger@theory.lcs.mit.edu Tue Apr 15 17:36:32 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA19761; Tue, 15 Apr 97 21:39:40 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id VAA22510; Tue, 15 Apr 1997 21:36:32 -0400 Date: Tue, 15 Apr 1997 21:36:32 -0400 Message-Id: <199704160136.VAA22510@ibis> From: "David R. Karger" To: 6042-forum Subject: drop day *** EOOH *** Return-Path: Date: Tue, 15 Apr 1997 21:36:32 -0400 From: "David R. Karger" To: 6042-forum Subject: drop day If any of you are thinking of dropping this course but are waiting out your quiz 2 grade, please let 6042-headta know so that we can set up an "early warning system" to make sure that you get your info in time.  1,, Mail-from: From alexv@theory.lcs.mit.edu Wed Apr 16 12:56:29 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA09896; Wed, 16 Apr 97 16:58:38 EDT From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA05574; Wed, 16 Apr 97 16:56:29 EDT Date: Wed, 16 Apr 97 16:56:29 EDT Message-Id: <199704162056.AA05574@owl.lcs.mit.edu> To: 6042-tas *** EOOH *** Return-Path: From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Date: Wed, 16 Apr 97 16:56:29 EDT To: 6042-tas Dear Terri, Dimitri and David, When ever you create a handout you must also update handout-numbers.tex file. People created files and expected them to have the numbers they put in front of the name-file but the files don't have those numbers since the handout-numbers.tex file has not been updated. Here are the problem files: Number expected Actual Number(according to handout-numbers.tex) H24-Quiz1Solns.tex \hlabel{pquiz1}{13} % Practice Problems H25-Sol8.tex \hlabel{sol8}{24} % Pset 8 solutions H26-pquiz2.tex \hlabel{pquiz2}{25} % Practice Problems H27-Pset10.tex \hlabel{ps10}{30} % Pset 10, Whoever is responsible for the above files please update your file and the handout-numbers.tex file. Thanks. Cheers, Alex.  1,, Mail-from: From alexv@theory.lcs.mit.edu Wed Apr 16 12:56:43 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA09914; Wed, 16 Apr 97 16:58:52 EDT From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA05577; Wed, 16 Apr 97 16:56:43 EDT Date: Wed, 16 Apr 97 16:56:43 EDT Message-Id: <199704162056.AA05577@owl.lcs.mit.edu> To: 6042-tas *** EOOH *** Return-Path: From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Date: Wed, 16 Apr 97 16:56:43 EDT To: 6042-tas Dear Terri, Dimitri and David, When ever you create a handout you must also update handout-numbers.tex file. People created files and expected them to have the numbers they put in front of the name-file but the files don't have those numbers since the handout-numbers.tex file has not been updated. Here are the problem files: Number expected Actual Number(according to handout-numbers.tex) H24-Quiz1Solns.tex \hlabel{pquiz1}{13} % Practice Problems H25-Sol8.tex \hlabel{sol8}{24} % Pset 8 solutions H26-pquiz2.tex \hlabel{pquiz2}{25} % Practice Problems H27-Pset10.tex \hlabel{ps10}{30} % Pset 10, Whoever is responsible for the above files please update your file and the handout-numbers.tex file. Thanks. Cheers, Alex.  1,, Mail-from: From alexv@theory.lcs.mit.edu Wed Apr 16 12:56:53 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA09932; Wed, 16 Apr 97 16:59:02 EDT From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA05580; Wed, 16 Apr 97 16:56:53 EDT Date: Wed, 16 Apr 97 16:56:53 EDT Message-Id: <199704162056.AA05580@owl.lcs.mit.edu> To: 6042-tas *** EOOH *** Return-Path: From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Date: Wed, 16 Apr 97 16:56:53 EDT To: 6042-tas Dear Terri, Dimitri and David, When ever you create a handout you must also update handout-numbers.tex file. People created files and expected them to have the numbers they put in front of the name-file but the files don't have those numbers since the handout-numbers.tex file has not been updated. Here are the problem files: Number expected Actual Number(according to handout-numbers.tex) H24-Quiz1Solns.tex \hlabel{pquiz1}{13} % Practice Problems H25-Sol8.tex \hlabel{sol8}{24} % Pset 8 solutions H26-pquiz2.tex \hlabel{pquiz2}{25} % Practice Problems H27-Pset10.tex \hlabel{ps10}{30} % Pset 10, Whoever is responsible for the above files please update your file and the handout-numbers.tex file. Thanks. Cheers, Alex.  1,, Mail-from: From alexv@theory.lcs.mit.edu Wed Apr 16 13:02:26 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA10195; Wed, 16 Apr 97 17:04:35 EDT From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA05583; Wed, 16 Apr 97 17:02:26 EDT Date: Wed, 16 Apr 97 17:02:26 EDT Message-Id: <199704162102.AA05583@owl.lcs.mit.edu> To: 6042-tas *** EOOH *** Return-Path: From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Date: Wed, 16 Apr 97 17:02:26 EDT To: 6042-tas The file /a/class/6.042/spring97/handouts/handout-numbers.tex must be checked out and then checked-in with RCS otherwise all changes will be discarded. Alex.  1,, Mail-from: From alexv@theory.lcs.mit.edu Thu Apr 17 04:38:47 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA25912; Thu, 17 Apr 97 08:40:58 EDT From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA06045; Thu, 17 Apr 97 08:38:47 EDT Date: Thu, 17 Apr 97 08:38:47 EDT Message-Id: <199704171238.AA06045@owl.lcs.mit.edu> To: 6042-forum *** EOOH *** Return-Path: From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Date: Thu, 17 Apr 97 08:38:47 EDT To: 6042-forum I will not be holding office hours this Friday 4-6. I will hold office hours on Wednesday 10:30am -- 12:30 pm in NE43-308. Good luck studying! -- Alex  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Thu Apr 17 11:18:19 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA14064; Thu, 17 Apr 97 15:25:21 EDT Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA23057; Thu, 17 Apr 97 15:18:21 EDT Message-Id: <199704171918.AA23057@phoinix.lcs.mit.edu> To: 6042-teachers Cc: 6042-graders Subject: xess Date: Thu, 17 Apr 97 15:18:19 -0400 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-teachers Cc: 6042-graders Subject: xess Date: Thu, 17 Apr 97 15:18:19 -0400 From: dimitrip@theory.lcs.mit.edu WARNING! I just accessed the grades file using the new protocol. I noticed that grades.xs3 coexisted with dan.xs3 and david.xs3. I understand that there must be only one xs3 file at a time. Please remember to "mv" not "cp" the file with your name to grades,xs3 when you are done. Dimitri  1,, Mail-from: From karger@theory.lcs.mit.edu Thu Apr 17 12:27:49 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA16888; Thu, 17 Apr 97 16:30:58 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id QAA27145; Thu, 17 Apr 1997 16:27:49 -0400 Date: Thu, 17 Apr 1997 16:27:49 -0400 Message-Id: <199704172027.QAA27145@ibis> From: "David R. Karger" To: dimitrip@theory.lcs.mit.edu Cc: 6042-teachers, 6042-graders In-Reply-To: <199704171918.AA23057@phoinix.lcs.mit.edu> (dimitrip@theory.lcs.mit.edu) Subject: Re: xess *** EOOH *** Return-Path: Date: Thu, 17 Apr 1997 16:27:49 -0400 From: "David R. Karger" To: dimitrip@theory.lcs.mit.edu Cc: 6042-teachers, 6042-graders In-Reply-To: <199704171918.AA23057@phoinix.lcs.mit.edu> (dimitrip@theory.lcs.mit.edu) Subject: Re: xess dont worry. dan.xs3 and david.xs3 are ancient. left over fro quiz planning. should be removed as soon as we are sure that they don't contain any information we are missing from the main sheet.  1,, Mail-from: From gupta@theory.lcs.mit.edu Thu Apr 17 16:10:35 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA24099; Thu, 17 Apr 97 20:12:46 EDT From: gupta@theory.lcs.mit.edu (David Gupta) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA06586; Thu, 17 Apr 97 20:10:35 EDT Date: Thu, 17 Apr 97 20:10:35 EDT Message-Id: <199704180010.AA06586@owl.lcs.mit.edu> To: 6042-forum Subject: recitations tomorrow *** EOOH *** Return-Path: From: gupta@theory.lcs.mit.edu (David Gupta) Date: Thu, 17 Apr 97 20:10:35 EDT To: 6042-forum Subject: recitations tomorrow Hello all, I'm covering Alex's recitations (still in the usual rooms) tomorrow. Daniele's 3pm recitation is meeting in 34-301 with Alex's. Also, there are a number of things being handed out in recitation this week. David G.  1,, Mail-from: From karger@theory.lcs.mit.edu Thu Apr 17 18:04:58 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA26933; Thu, 17 Apr 97 22:08:07 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id WAA27881; Thu, 17 Apr 1997 22:04:58 -0400 Date: Thu, 17 Apr 1997 22:04:58 -0400 Message-Id: <199704180204.WAA27881@ibis> From: "David R. Karger" To: 6042-forum Subject: quiz coverage *** EOOH *** Return-Path: Date: Thu, 17 Apr 1997 22:04:58 -0400 From: "David R. Karger" To: 6042-forum Subject: quiz coverage I was asked to send mail about what the quiz covers. Coverage begins at lecture 10---functions and their applications to counting and pigeonhole---and continues fully through lecture 17 (rules for counting) with some light coverage of binomial coefficients as well. Of course, though no question will focus exclusively on material from quiz 1, some of the questions will involve inductions, proofs of algorithm correctness, and so forth. Good luck studying!  1,, Mail-from: From gupta@theory.lcs.mit.edu Thu Apr 17 19:02:13 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA28574; Thu, 17 Apr 97 23:04:23 EDT From: gupta@theory.lcs.mit.edu (David Gupta) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA06621; Thu, 17 Apr 97 23:02:13 EDT Date: Thu, 17 Apr 97 23:02:13 EDT Message-Id: <199704180302.AA06621@owl.lcs.mit.edu> To: 6042-teachers Subject: quiz 2 problems *** EOOH *** Return-Path: From: gupta@theory.lcs.mit.edu (David Gupta) Date: Thu, 17 Apr 97 23:02:13 EDT To: 6042-teachers Subject: quiz 2 problems Let $D$ be an undirected graph on the vertices $\{1, \ldots 500\}$. Use Dilworth's Theorem to prove that either $D$ can be colored (using as many colors as we like) in such a way that there are 20 vertices of the same color or there is a path in $D$ passing through 25 vertices of $D$ in numerical order. Let $T$ be a non-trivial tree on $n$ nodes. Let $S$ be a subgraph of $T$ that is also a tree and contains all the leaves of $T$. Use well-ordering on $n$ to prove that $S = T$.  1,, Mail-from: From miccianc@theory.lcs.mit.edu Fri Apr 18 08:34:21 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA17893; Fri, 18 Apr 97 12:32:04 EDT Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA11221; Fri, 18 Apr 97 12:34:21 EDT Date: Fri, 18 Apr 97 12:34:21 EDT Message-Id: <199704181634.AA11221@lark.lcs.mit.edu> From: Daniele Micciancio To: 6042-forum Subject: *** EOOH *** Return-Path: Date: Fri, 18 Apr 97 12:34:21 EDT From: Daniele Micciancio To: 6042-forum Subject: problem set 9 solutions will be posted on the webpage today by 7pm. daniele.  1,, Mail-from: From tiuzzol@MIT.EDU Fri Apr 18 10:17:16 1997 Return-Path: Received: from MIT.EDU (SOUTH-STATION-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA25076; Fri, 18 Apr 97 14:17:17 EDT Received: from M38-370-12.MIT.EDU by MIT.EDU with SMTP id AA03962; Fri, 18 Apr 97 14:17:18 EDT From: tiuzzol@MIT.EDU Received: by m38-370-12.MIT.EDU (5.x/4.7) id AA08933; Fri, 18 Apr 1997 14:17:16 -0400 Date: Fri, 18 Apr 1997 14:17:16 -0400 Message-Id: <9704181817.AA08933@m38-370-12.MIT.EDU> To: 6042-forum@theory.lcs.mit.edu Subject: Tests, handouts, and test review etc. information *** EOOH *** Return-Path: From: tiuzzol@MIT.EDU Date: Fri, 18 Apr 1997 14:17:16 -0400 To: 6042-forum@theory.lcs.mit.edu Subject: Tests, handouts, and test review etc. information A couple of things: There will be office hours this upcoming week on Monday from 4-6 (Dave) and 7-9pm (Terri) Tuesday from 10am to 2pm (Daniele and Dimitri) Wednesday from 10:30am to 12:30noon (Alex) all in the NE43-308/conference room/lounge area of Tech Square. If the lobby door is locked, knock loudly. There will be two quiz reviews on Tuesday, 4/22 in 3-270 5-7 (Daniele) and from 7-9 (Terri). Problem set 9 solutions will be on the web by tonight. Problem set 10 was handed out in class yesterday, and is due the week after next. Some Tutorial solutions (probably 6, 8, and 9) will be on the web by 5pm tonight. Have a good weekend! Terri  1,, Mail-from: From karger@theory.lcs.mit.edu Fri Apr 18 14:01:30 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA09918; Fri, 18 Apr 97 18:04:41 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id SAA29523; Fri, 18 Apr 1997 18:01:30 -0400 Date: Fri, 18 Apr 1997 18:01:30 -0400 Message-Id: <199704182201.SAA29523@ibis> From: "David R. Karger" To: 6042-forum Subject: grade audit *** EOOH *** Return-Path: Date: Fri, 18 Apr 1997 18:01:30 -0400 From: "David R. Karger" To: 6042-forum Subject: grade audit This message is for those of you who HAVE NOT yet turned in your old problem sets for an "audit." We need everyone to turn them in, because a software system bug which we recently identified has caused certain grades to be erased. Without your problem sets, we cannot verify that we have all of your scores, so you may be surprised by the class grade that you get! So if you have not yet done so, please bring your old problem sets to the quiz so that we can fix up our records.  1,, Mail-from: From karger@theory.lcs.mit.edu Fri Apr 18 14:02:59 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA09978; Fri, 18 Apr 97 18:06:10 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id SAA29525; Fri, 18 Apr 1997 18:02:59 -0400 Date: Fri, 18 Apr 1997 18:02:59 -0400 Message-Id: <199704182202.SAA29525@ibis> From: "David R. Karger" To: 6042-forum Subject: grade audit *** EOOH *** Return-Path: Date: Fri, 18 Apr 1997 18:02:59 -0400 From: "David R. Karger" To: 6042-forum Subject: grade audit If you have already turned in your old problem sets for audit, and did not pick them up in class or recitation, then you will have another chance to get them at the review sections next tuesday. You will know the sets were audited because there will be a little dot on the top corner.  1,, Mail-from: From gupta@theory.lcs.mit.edu Sun Apr 20 16:00:28 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA04453; Sun, 20 Apr 97 20:02:39 EDT From: gupta@theory.lcs.mit.edu (David Gupta) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA00668; Sun, 20 Apr 97 20:00:28 EDT Date: Sun, 20 Apr 97 20:00:28 EDT Message-Id: <199704210000.AA00668@owl.lcs.mit.edu> To: 6042-forum Subject: reminder *** EOOH *** Return-Path: From: gupta@theory.lcs.mit.edu (David Gupta) Date: Sun, 20 Apr 97 20:00:28 EDT To: 6042-forum Subject: reminder Hello all, Please remember that there are no tutorials this week. David G.  1,, Mail-from: From karger@theory.lcs.mit.edu Mon Apr 21 08:54:14 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA07615; Mon, 21 Apr 97 12:57:27 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id MAA04701; Mon, 21 Apr 1997 12:54:14 -0400 Date: Mon, 21 Apr 1997 12:54:14 -0400 Message-Id: <199704211654.MAA04701@ibis> From: "David R. Karger" To: 6042-forum Subject: review set solutions *** EOOH *** Return-Path: Date: Mon, 21 Apr 1997 12:54:14 -0400 From: "David R. Karger" To: 6042-forum Subject: review set solutions For those of you who want to go over them early, I have placed a draft of the review set solutions on the course web page. This draft will be completed and gone over during the review session tomorrow night.  1,, Mail-from: From karger@theory.lcs.mit.edu Mon Apr 21 09:36:21 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA10923; Mon, 21 Apr 97 13:39:32 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id NAA04738; Mon, 21 Apr 1997 13:36:21 -0400 Date: Mon, 21 Apr 1997 13:36:21 -0400 Message-Id: <199704211736.NAA04738@ibis> From: "David R. Karger" To: 6042-forum Subject: exam *** EOOH *** Return-Path: Date: Mon, 21 Apr 1997 13:36:21 -0400 From: "David R. Karger" To: 6042-forum Subject: exam The upcoming exam operates under the same restrictions as the previous exam: closed book 1 crib sheet calculators, but none running programs  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Tue Apr 22 14:38:10 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA21365; Tue, 22 Apr 97 18:45:14 EDT Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA00765; Tue, 22 Apr 97 18:38:12 EDT Message-Id: <199704222238.AA00765@phoinix.lcs.mit.edu> To: 6042-teachers Subject: quiz2 Date: Tue, 22 Apr 97 18:38:10 -0400 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-teachers Subject: quiz2 Date: Tue, 22 Apr 97 18:38:10 -0400 From: dimitrip@theory.lcs.mit.edu Hello, I was looking at the quiz. I agree with Daniele that this quiz is extra long and the students will not be able to finish in 2 hours. I believe we should shorten it. Here are some suggestions: - Make problems 1 and 2 strictly True/False without explanations. - Remove part (a) of problem 5. - Remove Problem 6 completetly, or remove part b of 5 and keep 6. - Romove 12 at the cost of not covering counting. We will have plenty of oportunities to cover counting in the final. I believe that this quiz should be no longer than 10 questions. Please let me know what you think. Thanks, Dimitri  1,, Mail-from: From gupta@theory.lcs.mit.edu Tue Apr 22 23:18:08 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA07991; Wed, 23 Apr 97 03:20:20 EDT From: gupta@theory.lcs.mit.edu (David Gupta) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA02456; Wed, 23 Apr 97 03:18:08 EDT Date: Wed, 23 Apr 97 03:18:08 EDT Message-Id: <199704230718.AA02456@owl.lcs.mit.edu> To: 6042-tas Subject: quiz 2 *** EOOH *** Return-Path: From: gupta@theory.lcs.mit.edu (David Gupta) Date: Wed, 23 Apr 97 03:18:08 EDT To: 6042-tas Subject: quiz 2 Hi, Please take a look at my version of quiz 2, especially the number of points assigned to each problem. The last T/F question could be replaced with a better counting question. Other than that, I think that it's ready. So you can also send me comments about formatting and such. David  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Wed Apr 23 06:46:29 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA22855; Wed, 23 Apr 97 10:45:25 EDT Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA23647; Wed, 23 Apr 97 10:46:30 EDT Message-Id: <199704231446.AA23647@peacock.lcs.mit.edu> To: gupta@theory.lcs.mit.edu (David Gupta) Cc: 6042-tas, dimitrip Subject: Re: quiz 2 In-Reply-To: Your message of Wed, 23 Apr 97 03:18:08 -0400. <199704230718.AA02456@owl.lcs.mit.edu> Date: Wed, 23 Apr 97 10:46:29 -0400 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: gupta@theory.lcs.mit.edu (David Gupta) Cc: 6042-tas, dimitrip Subject: Re: quiz 2 In-Reply-To: Your message of Wed, 23 Apr 97 03:18:08 -0400. <199704230718.AA02456@owl.lcs.mit.edu> Date: Wed, 23 Apr 97 10:46:29 -0400 From: dimitrip@theory.lcs.mit.edu But, this quiz is much longer than the one I was looking at. You only removed the trivial problem with the square and you added a bunch of very hard T/F questions. I still believe that the problems with the savings account, and the last problem on inclusion/exclusion should go. Please consider this. I wouldn't like the semester that I TAed 6042 to remain in the history of MIT as the semester with the highest suicide rate. Dimitri  1,, Mail-from: From tiuzzol@MIT.EDU Wed Apr 23 13:47:33 1997 Return-Path: Received: from MIT.EDU (SOUTH-STATION-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA23914; Wed, 23 Apr 97 17:47:35 EDT Received: from BILL-THE-CAT.MIT.EDU by MIT.EDU with SMTP id AA14392; Wed, 23 Apr 97 17:47:35 EDT From: tiuzzol@MIT.EDU Received: by bill-the-cat.MIT.EDU (5.x/4.7) id AA01990; Wed, 23 Apr 1997 17:47:33 -0400 Date: Wed, 23 Apr 1997 17:47:33 -0400 Message-Id: <9704232147.AA01990@bill-the-cat.MIT.EDU> Content-Type: text Apparently-To: 6042-forum@theory.lcs.mit.edu *** EOOH *** Return-Path: From: tiuzzol@MIT.EDU Date: Wed, 23 Apr 1997 17:47:33 -0400 Content-Type: text Since a lot of you have been asking, the test is tonight (Wednesday) from 7-9pm in 3-270 and 3-370 (same places as last time) Good luck! Terri  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Sat Apr 26 09:33:31 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA03379; Sat, 26 Apr 97 13:40:38 EDT Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA02681; Sat, 26 Apr 97 13:33:33 EDT Message-Id: <199704261733.AA02681@phoinix.lcs.mit.edu> To: tiuzzol Cc: 6042-teachers Subject: ps10 solutions Date: Sat, 26 Apr 97 13:33:31 -0400 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: tiuzzol Cc: 6042-teachers Subject: ps10 solutions Date: Sat, 26 Apr 97 13:33:31 -0400 From: dimitrip@theory.lcs.mit.edu Hello, I wrote solutions to the even problems of ps10. They are in the file ps10.tex. Dimitri  1,, Mail-from: From tiuzzol@mit.edu Wed Apr 30 13:27:18 1997 Return-Path: Received: from LOLA-GRANOLA.MIT.EDU by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA05574; Wed, 30 Apr 97 17:27:20 EDT Received: (from tiuzzol@localhost) by lola-granola.MIT.EDU (8.8.5/8.6.12) id RAA24314; Wed, 30 Apr 1997 17:27:18 -0400 (EDT) Date: Wed, 30 Apr 1997 17:27:18 -0400 (EDT) From: Terri Iuzzolino Message-Id: <199704302127.RAA24314@lola-granola.MIT.EDU> To: 6042-tas@theory.lcs.mit.edu, karger@theory.lcs.mit.edu *** EOOH *** Return-Path: Date: Wed, 30 Apr 1997 17:27:18 -0400 (EDT) From: Terri Iuzzolino To: 6042-tas@theory.lcs.mit.edu, karger@theory.lcs.mit.edu Anyone have a simple formula for Sum (i=0 to m) C(n i)/C(m i) ?  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Wed Apr 30 14:47:31 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA07399; Wed, 30 Apr 97 18:54:41 EDT Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA07554; Wed, 30 Apr 97 18:47:33 EDT Message-Id: <199704302247.AA07554@phoinix.lcs.mit.edu> To: Terri Iuzzolino Cc: 6042-tas@theory.lcs.mit.edu, karger@theory.lcs.mit.edu, dimitrip In-Reply-To: Your message of Wed, 30 Apr 97 17:27:18 -0400. <199704302127.RAA24314@lola-granola.MIT.EDU> Date: Wed, 30 Apr 97 18:47:31 -0400 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: Terri Iuzzolino Cc: 6042-tas@theory.lcs.mit.edu, karger@theory.lcs.mit.edu, dimitrip In-Reply-To: Your message of Wed, 30 Apr 97 17:27:18 -0400. <199704302127.RAA24314@lola-granola.MIT.EDU> Date: Wed, 30 Apr 97 18:47:31 -0400 From: dimitrip@theory.lcs.mit.edu Yeah, I got it. I'll write it up. Shall I use the file sol10.tex? Dimitri ------------------------------------------------------ Anyone have a simple formula for Sum (i=0 to m) C(n i)/C(m i) ?  1,, Mail-from: From karger@theory.lcs.mit.edu Thu May 1 14:27:12 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA04203; Thu, 01 May 97 18:30:34 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id SAA26636; Thu, 1 May 1997 18:27:12 -0400 Date: Thu, 1 May 1997 18:27:12 -0400 Message-Id: <199705012227.SAA26636@ibis> From: "David R. Karger" To: 6042-forum Subject: grades *** EOOH *** Return-Path: Date: Thu, 1 May 1997 18:27:12 -0400 From: "David R. Karger" To: 6042-forum Subject: grades In our ongoing attempt to resolve our 6.042 grades problem, we are instituting the following procedure. When you are in posession of both the strips that we give you (with the grades we think you have) and your problem sets, bring both the strips and the problems sets to your tutorial. Your TA will verify any errors, take the strips, and update the spreadsheet. Hopefully this will finally resolve the problem. Thanks, David Karger  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Wed May 7 12:18:01 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA22383; Wed, 07 May 97 16:25:21 EDT Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA13425; Wed, 07 May 97 16:18:05 EDT Message-Id: <199705072018.AA13425@phoinix.lcs.mit.edu> To: 6042-teachers Cc: 6042-graders Subject: homework sets Date: Wed, 07 May 97 16:18:01 -0400 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-teachers Cc: 6042-graders Subject: homework sets Date: Wed, 07 May 97 16:18:01 -0400 From: dimitrip@theory.lcs.mit.edu Hello, One of my students, Stacy Williams, nevr got back doesn't have grades for any of her problem sets 5,6, and 7. Does anybody ever show them or knows what happened to them? Another one, Sofya Porgree, never got back or got a grade on ps6. I noticed very few grades of this problem set were recorded. Dimitri  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Thu May 8 10:30:02 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA16424; Thu, 08 May 97 14:37:18 EDT Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA00266; Thu, 08 May 97 14:30:04 EDT Message-Id: <199705081830.AA00266@phoinix.lcs.mit.edu> To: karger Cc: 6042-tas Subject: meeting Date: Thu, 08 May 97 14:30:02 -0400 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: karger Cc: 6042-tas Subject: meeting Date: Thu, 08 May 97 14:30:02 -0400 From: dimitrip@theory.lcs.mit.edu Hello, I might be a little late for the meeting today. I send the suggested tutorial problems (tutotrial 10 of last fall) \documentstyle[12pt,twoside,amsfonts,amstex]{article} \input{macros-course-tutorials} \parskip1.5ex \parindent0pt \begin{document} \tutorial{tutorial10}{Problems for Tutorial 10}{December 1, 1996} \section {Wald's Identity and Stopping Rules} Let $X_1,X_2\ldots$ be a sequence of iid random variables. A {\em stopping rule} for a set of random variables $\{X_n;n \geq 1 \}$ is a random variable $N$ with values in $\naturals$, such that the event $\{N \geq n \}$ may depend on $X_1,\ldots,X_{n-1}$ but is independent of the values $X_{n},X_{n+1},\ldots$. \\ Prove Wald's Identity for stopping rules: \\ If $X_1,X_2,\dots$ and $N$ are as above, then \begin{displaymath} E[ \sum_{i=1}^{N}{X_i}] = E[X]E[N] \end{displaymath} {\it (Hint: Let $I_n$ be the indicator of the event $\{N \geq n \}$ and consider the sum $\sum_{n=1}^{\infty}{X_nI_n}$ )} \section{The Distressed Student} A Harvard student, lost in the underground corridors of MIT, finds himself in a room containing three doors. Door 1 leads him to freedom (out of MIT) after two hours travel; door 2 returns him to the his room after four hours travel, and door 3 returns him to the room after eight hours travel. Each time he finds himself in the room, the Harvard student picks a door with equal probability. Let $T$ denote the time until he finds the exit. \\ \bparts \ppart Define a sequence of iid random variables $X_i$ and a stopping rule $N$ such that \begin{displaymath} T = \sum_{i=1}^{N}{X_i} \end{displaymath} \ppart Use Wald's Identity to find $E[T]$ \ppart Now suppose that an MIT student is also lost and finds herself in a similar situation to the Harvard student. The MIT student never choses the same door twice. What is $E[T]$ for the MIT student? \eparts \end{document}  1,, Mail-from: From alexv@theory.lcs.mit.edu Thu May 8 13:34:00 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA20958; Thu, 08 May 97 17:36:19 EDT From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA00608; Thu, 08 May 97 17:34:00 EDT Date: Thu, 08 May 97 17:34:00 EDT Message-Id: <199705082134.AA00608@owl.lcs.mit.edu> To: 6042-tas Subject: Reminder of upcoming work *** EOOH *** Return-Path: From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Date: Thu, 08 May 97 17:34:00 EDT To: 6042-tas Subject: Reminder of upcoming work Upcoming work: Problem Set 11: David, Alex Problem Set 12: Terri, Dimitri, Daniele Lect. 21: Daniele Lect. 22: Alex Lect. 23: Alex Lect. 24: Dimitri Lect. 25: Terri Final: Gathering Problems: Terri Writting Solutions: Dimitri, Daniele Review: Alex, David Problems for Exam: Topics on the fist third of the semester: David Topics on the second third of the semester: Dimitri, David Topics on the last third of the semester: Terri, Alex  1,, Mail-from: From alexv@theory.lcs.mit.edu Thu May 8 14:03:50 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA21640; Thu, 08 May 97 18:06:09 EDT From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA00650; Thu, 08 May 97 18:03:50 EDT Date: Thu, 08 May 97 18:03:50 EDT Message-Id: <199705082203.AA00650@owl.lcs.mit.edu> To: 6042-tas *** EOOH *** Return-Path: From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Date: Thu, 08 May 97 18:03:50 EDT To: 6042-tas David Karger wants us all to send the final problems to him versus Terri. Alex  1,, Mail-from: From miccianc@theory.lcs.mit.edu Fri May 9 12:43:13 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA15459; Fri, 09 May 97 16:40:44 EDT From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA13981; Fri, 09 May 97 16:43:13 EDT Date: Fri, 09 May 97 16:43:13 EDT Message-Id: <199705092043.AA13981@lark.lcs.mit.edu> To: 6042-teachers *** EOOH *** Return-Path: From: miccianc@theory.lcs.mit.edu (Daniele Micciancio) Date: Fri, 09 May 97 16:43:13 EDT To: 6042-teachers Instead of fall96 why don't we use the spring96 final for the review session for which solutions have already been written with latex? daniele.  1,, Mail-from: From tiuzzol@MIT.EDU Fri May 9 22:53:14 1997 Return-Path: Received: from MIT.EDU (SOUTH-STATION-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA22925; Sat, 10 May 97 02:53:17 EDT Received: from M2-032-13.MIT.EDU by MIT.EDU with SMTP id AA21484; Sat, 10 May 97 02:53:16 EDT From: tiuzzol@MIT.EDU Received: by m2-032-13.MIT.EDU (5.x/4.7) id AA25477; Sat, 10 May 1997 02:53:14 -0400 Date: Sat, 10 May 1997 02:53:14 -0400 Message-Id: <9705100653.AA25477@m2-032-13.MIT.EDU> To: 6042-forum@theory.lcs.mit.edu Subject: Grades sheets and statistics *** EOOH *** Return-Path: From: tiuzzol@MIT.EDU Date: Sat, 10 May 1997 02:53:14 -0400 To: 6042-forum@theory.lcs.mit.edu Subject: Grades sheets and statistics Here are the statistics for the numbers you have on your grade sheet. These numbers actually apply to the next set of sheets you'll receive in tutorial on Monday. Please check these sheets over, and again, if there are any corrections, let us know. Hopefully everything should be correct though. Overall-Score Quiz 2 Quiz 1 Tutorials Pset Total ------------------------------------------------------------------- Perfect 100.0 120 104 100 100 Average 72.5 90 62 73 79 Median 74.2 90 63 73 84 Std Dev 10.1 12.7 14.8 13.5 17 Terri PS: I do not know what will be an A and what will be a B.  1,, Mail-from: From tiuzzol@MIT.EDU Sat May 10 09:01:01 1997 Return-Path: Received: from MIT.EDU (PACIFIC-CARRIER-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA27005; Sat, 10 May 97 13:01:02 EDT Received: from RINGWORLD.MIT.EDU by MIT.EDU with SMTP id AA26821; Sat, 10 May 97 12:00:24 EST Received: (from tiuzzol@localhost) by ringworld.MIT.EDU (8.6.11/8.6.11) id NAA17389 for 6042-teachers@theory.lcs.mit.edu; Sat, 10 May 1997 13:01:01 -0400 Date: Sat, 10 May 1997 13:01:01 -0400 From: Terri Iuzzolino Message-Id: <199705101701.NAA17389@ringworld.MIT.EDU> To: 6042-teachers@theory.lcs.mit.edu Subject: Quiz 2 *** EOOH *** Return-Path: Date: Sat, 10 May 1997 13:01:01 -0400 From: Terri Iuzzolino To: 6042-teachers@theory.lcs.mit.edu Subject: Quiz 2 If you can, plase check over the problem you corrected on Quiz 2, and make comments/ correctinos on common mistakes. I realize some of the diagrams aren't present. try to check the rest over. Also, let me know when you're finished checking over your problem. We'll probably hand out the solutions on Tuesday Terri  1,, Mail-from: From miccianc@theory.lcs.mit.edu Sat May 10 11:23:47 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA28641; Sat, 10 May 97 15:21:18 EDT Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA14113; Sat, 10 May 97 15:23:47 EDT Date: Sat, 10 May 97 15:23:47 EDT Message-Id: <199705101923.AA14113@lark.lcs.mit.edu> From: Daniele Micciancio To: 6042-tas Subject: Sol12 *** EOOH *** Return-Path: Date: Sat, 10 May 97 15:23:47 EDT From: Daniele Micciancio To: 6042-tas Subject: Sol12 I wrote solutions to Pset12, problem 4, 5 and most of 8 in H35-Sol12.tex. daniele.  1,, Mail-from: From miccianc@theory.lcs.mit.edu Sat May 10 11:28:31 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA28720; Sat, 10 May 97 15:26:02 EDT Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA14117; Sat, 10 May 97 15:28:31 EDT Date: Sat, 10 May 97 15:28:31 EDT Message-Id: <199705101928.AA14117@lark.lcs.mit.edu> From: Daniele Micciancio To: 6042-forum Subject: *** EOOH *** Return-Path: Date: Sat, 10 May 97 15:28:31 EDT From: Daniele Micciancio To: 6042-forum Subject: I won't hold office hours this monday because I'll be out of town. Dimitri will hold office hours on Monday from 10 to 12 instead of the usual time. Daniele.  1,, Mail-from: From tiuzzol@MIT.EDU Sun May 11 09:50:02 1997 Return-Path: Received: from MIT.EDU (SOUTH-STATION-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA09918; Sun, 11 May 97 13:50:07 EDT Received: from W20-575-3.MIT.EDU by MIT.EDU with SMTP id AA15040; Sun, 11 May 97 13:50:08 EDT From: tiuzzol@MIT.EDU Received: by w20-575-3.MIT.EDU (5.x/4.7) id AA14805; Sun, 11 May 1997 13:50:02 -0400 Date: Sun, 11 May 1997 13:50:02 -0400 Message-Id: <9705111750.AA14805@w20-575-3.MIT.EDU> To: 6042-tas@theory.lcs.mit.edu, alexv@theory.lcs.mit.edu Subject: PS 10 *** EOOH *** Return-Path: From: tiuzzol@MIT.EDU Date: Sun, 11 May 1997 13:50:02 -0400 To: 6042-tas@theory.lcs.mit.edu, alexv@theory.lcs.mit.edu Subject: PS 10 I will deal with finishing up PS 10 on Monday night to be handed out on Tuesday. Same with the Quiz soltuions if people finish editing their problems by Tuesday morning. The Problem 3 for PS10 is on athena. it's the tree problem, and it's not quite complete, but being done in Frame. Terri  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Sun May 11 11:49:47 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA11075; Sun, 11 May 97 15:57:04 EDT Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA04230; Sun, 11 May 97 15:49:50 EDT Message-Id: <199705111949.AA04230@phoinix.lcs.mit.edu> To: 6042-tas Subject: ps12 Date: Sun, 11 May 97 15:49:47 -0400 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: 6042-tas Subject: ps12 Date: Sun, 11 May 97 15:49:47 -0400 From: dimitrip@theory.lcs.mit.edu I wrote solutions to problems 1 and 3 of problem set 12. Dimitri  0, unseen,, *** EOOH *** Mail-from: From tiuzzol@theory.lcs.mit.edu Mon May 12 23:39:02 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA15770; Tue, 13 May 97 03:41:25 EDT From: tiuzzol@theory.lcs.mit.edu (Terri Iuzzolino) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA01777; Tue, 13 May 97 03:39:02 EDT Date: Tue, 13 May 97 03:39:02 EDT Message-Id: <199705130739.AA01777@owl.lcs.mit.edu> To: 6042-teachers@theory.lcs.mit.edu Subject: QUIZ 2 soln's Hey guys..... So quiz 2 solutions are going out tomorrow, and only Dimitri and Prof Karger have told me that they checked over their problems. Please check them over and let me know if they're ok by 1:45pm at the latest. Thanks. Also, I've made changes/additions to Problem 3 (completely new), 5b,f, and g and 6. Terri  0, unseen,, *** EOOH *** Mail-from: From tiuzzol@MIT.EDU Tue May 13 09:24:35 1997 Return-Path: Received: from MIT.EDU (PACIFIC-CARRIER-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA25467; Tue, 13 May 97 13:24:36 EDT Received: from RINGWORLD.MIT.EDU by MIT.EDU with SMTP id AA14991; Tue, 13 May 97 12:23:57 EST Received: (from tiuzzol@localhost) by ringworld.MIT.EDU (8.6.11/8.6.11) id NAA02579; Tue, 13 May 1997 13:24:35 -0400 Date: Tue, 13 May 1997 13:24:35 -0400 From: Terri Iuzzolino Message-Id: <199705131724.NAA02579@ringworld.MIT.EDU> To: 6042-tas@theory.lcs.mit.edu, alexv@theory.lcs.mit.edu Subject: copies Pleaes make only 120 copies. We don't have more than 120 students. no need to wait the paper.  0, unseen,, *** EOOH *** Mail-from: From tiuzzol@MIT.EDU Tue May 13 09:29:04 1997 Return-Path: Received: from MIT.EDU (SOUTH-STATION-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA25571; Tue, 13 May 97 13:29:06 EDT Received: from RINGWORLD.MIT.EDU by MIT.EDU with SMTP id AA15571; Tue, 13 May 97 13:29:05 EDT Received: (from tiuzzol@localhost) by ringworld.MIT.EDU (8.6.11/8.6.11) id NAA02797; Tue, 13 May 1997 13:29:04 -0400 Date: Tue, 13 May 1997 13:29:04 -0400 From: Terri Iuzzolino Message-Id: <199705131729.NAA02797@ringworld.MIT.EDU> To: 6042-tas@theory.lcs.mit.edu, alexv@theory.lcs.mit.edu Subject: PS 10 and quiz 2 I will deal with both of these. PS 10 isn't quite ready yet. so don't photocopy it yet.  0, unseen,, *** EOOH *** Mail-from: From alexv@theory.lcs.mit.edu Tue May 13 11:39:25 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA28996; Tue, 13 May 97 15:41:46 EDT From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA02032; Tue, 13 May 97 15:39:25 EDT Date: Tue, 13 May 97 15:39:25 EDT Message-Id: <199705131939.AA02032@owl.lcs.mit.edu> To: 6042-tas Subject: 6 Handouts went out today Great effort on everyone's part. Thank you. -- Alex.  0, unseen,, *** EOOH *** Mail-from: From karger@theory.lcs.mit.edu Tue May 13 13:22:02 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA01327; Tue, 13 May 97 17:25:33 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id RAA22294; Tue, 13 May 1997 17:22:02 -0400 Date: Tue, 13 May 1997 17:22:02 -0400 Message-Id: <199705132122.RAA22294@ibis> From: "David R. Karger" To: 6042-forum Subject: anonymous pset 8 I have a pset 8 with no name. Done on graph paper in black ink. Any claimants?  0, unseen,, *** EOOH *** Mail-from: From gupta@theory.lcs.mit.edu Wed May 14 12:47:40 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA23519; Wed, 14 May 97 16:50:02 EDT From: gupta@theory.lcs.mit.edu (David Gupta) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA02216; Wed, 14 May 97 16:47:40 EDT Date: Wed, 14 May 97 16:47:40 EDT Message-Id: <199705142047.AA02216@owl.lcs.mit.edu> To: 6042-teachers Subject: students: looks like we've lost them... Hi, I only had three people show up to last night's tutorial. None of them could define expectation or give any equations, etc. involving expectations. Two of them thought the definition involved limits. This may explain why people were acting so clueless in lecture yesterday (like when Karger asked them what we could do with a term that was a sum of expectations). I had assumed in my other tutorials that people knew these things, but they well might not have. They were sort of able to produce the right answers, but I think they were basically relying on intition and guesswork. The big moral of the story seems to be that we should pay careful attention on the final exam to checking understanding of *theory* and not just on whether they get the right answer. David  0, unseen,, *** EOOH *** Mail-from: From tiuzzol@MIT.EDU Wed May 14 18:48:24 1997 Return-Path: Received: from MIT.EDU (PACIFIC-CARRIER-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA28364; Wed, 14 May 97 22:48:24 EDT Received: from YAZ-PISTACHIO.MIT.EDU by MIT.EDU with SMTP id AA23058; Wed, 14 May 97 21:47:44 EST From: tiuzzol@MIT.EDU Received: by yaz-pistachio.MIT.EDU (5.57/4.7) id AA10123; Wed, 14 May 97 22:48:24 -0400 Date: Wed, 14 May 97 22:48:24 -0400 Message-Id: <9705150248.AA10123@yaz-pistachio.MIT.EDU> To: 6042-graders@theory.lcs.mit.edu, 6042-teachers@theory.lcs.mit.edu Subject: Grades--Need to be in the spreadsheet! Just a reminder that the grades need to be in the spreadsheet by noon on Thursday...... (If you can't do it by then, email me asap.) that's today essentially. We're handing out the final grade slips in class. Terri  0, unseen,, *** EOOH *** Mail-from: From karger@theory.lcs.mit.edu Thu May 15 13:37:44 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA16153; Thu, 15 May 97 17:41:15 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id RAA28644; Thu, 15 May 1997 17:37:44 -0400 Date: Thu, 15 May 1997 17:37:44 -0400 Message-Id: <199705152137.RAA28644@ibis> From: "David R. Karger" To: 6042-forum I plan to verify your grades for psets 10 and 11 by mailing them to (only) you. Please let me know if you are concerned about having these two grades going out in the mail. -David Karger  0, unseen,, *** EOOH *** Mail-from: From karger@theory.lcs.mit.edu Thu May 15 14:17:58 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA16813; Thu, 15 May 97 18:21:31 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id SAA28666; Thu, 15 May 1997 18:17:58 -0400 Date: Thu, 15 May 1997 18:17:58 -0400 Message-Id: <199705152217.SAA28666@ibis> From: "David R. Karger" To: 6042-forum Subject: correction Before I get deluged with mail, let me clarify: please send mail only if you DO NOT want your grades on 10/11 emailed to you -David  0, unseen,, *** EOOH *** Mail-from: From karger@theory.lcs.mit.edu Thu May 15 14:22:53 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA16894; Thu, 15 May 97 18:26:25 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id SAA28668; Thu, 15 May 1997 18:22:53 -0400 Date: Thu, 15 May 1997 18:22:53 -0400 Message-Id: <199705152222.SAA28668@ibis> From: "David R. Karger" To: 6042-forum Subject: lecture correction In tpyical form, I finished the last lecture with an error. In discussing the proof of the Chernoff bound on random variable X, I applied the markov inequality to e^X. Instead it should be applied to c^X, where c is the constant in the theorem. Check the notes... -David  0, unseen,, *** EOOH *** Mail-from: From dimitrip@theory.lcs.mit.edu Thu May 15 15:20:56 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA17974; Thu, 15 May 97 19:28:15 EDT Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA02278; Thu, 15 May 97 19:20:57 EDT Message-Id: <199705152320.AA02278@phoinix.lcs.mit.edu> To: 6042-forum Cc: dimitrip Subject: office hours Date: Thu, 15 May 97 19:20:56 -0400 From: dimitrip@theory.lcs.mit.edu Hello, I will hold office hours on Monday 12 noon to 2pm. If you have corrections for your last grade strip, that's the time to do it. If you have not received your grade strip (and you are in my tutorial sections), come prepared. That is, bring all your problem sets & quizes so that if there are any mistakes we can correct them on the spot. If you have not received your grade strip and you cannot make it on Monday 12-2, send me mail NOW, because I will become unavailable from Monday afternoon to Friday morning. Cheers, Dimitri  0, unseen,, *** EOOH *** Mail-from: From karger@theory.lcs.mit.edu Thu May 15 16:17:51 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA18775; Thu, 15 May 97 20:21:24 EDT From: karger@theory.lcs.mit.edu (David R. Karger) Received: by ibis (SMI-8.6/TOC-1.2C) id UAA28846; Thu, 15 May 1997 20:17:51 -0400 Date: Thu, 15 May 1997 20:17:51 -0400 Message-Id: <199705160017.UAA28846@ibis> To: 6042-forum Subject: survey As I announced in class, there is a new handout (#37) that I would greatly appreciate your filling out. I am taking part in an overhaul of 6.042 this summer and your input will help us do a better job. Just bring the survey to the final. Thanks, David Karger  0, unseen,, *** EOOH *** Mail-from: From karger@theory.lcs.mit.edu Fri May 16 06:02:21 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA28052; Fri, 16 May 97 10:05:54 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id KAA03422; Fri, 16 May 1997 10:02:21 -0400 Date: Fri, 16 May 1997 10:02:21 -0400 Message-Id: <199705161402.KAA03422@ibis> From: "David R. Karger" To: 6042-forum In-Reply-To: <199705160813.AA24320@theory.lcs.mit.edu> (alexv@theory.lcs.mit.edu) Subject: Re: office hours Actually, as I announced in class yesterday, my office hours will be from 1-3.  0, unseen,, *** EOOH *** Mail-from: From karger@theory.lcs.mit.edu Sun May 18 05:45:30 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA25100; Sun, 18 May 97 09:49:05 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id JAA16994; Sun, 18 May 1997 09:45:30 -0400 Date: Sun, 18 May 1997 09:45:30 -0400 Message-Id: <199705181345.JAA16994@ibis> From: "David R. Karger" To: 6042-forum Subject: problems for practicing expectations I have received a couple of requests for problems to practice expectation concepts. I have placed a problem set covering this material and solutions to it on the class web page as handouts 39 and 40. -David Karger  0, unseen,, *** EOOH *** Mail-from: From karger@theory.lcs.mit.edu Sun May 18 05:59:33 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA25218; Sun, 18 May 97 10:03:08 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id JAA17823; Sun, 18 May 1997 09:59:33 -0400 Date: Sun, 18 May 1997 09:59:33 -0400 Message-Id: <199705181359.JAA17823@ibis> From: "David R. Karger" To: 6042-forum Subject: notes 25 I have placed the lecture notes for lecture 25 (deviations from the mean) on the class web page.  0, unseen,, *** EOOH *** Mail-from: From dimitrip@theory.lcs.mit.edu Sun May 18 10:03:18 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA27126; Sun, 18 May 97 14:01:59 EDT Received: from peacock.lcs.mit.edu by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA07785; Sun, 18 May 97 14:03:20 EDT Message-Id: <199705181803.AA07785@peacock.lcs.mit.edu> To: 6042-teachers Cc: dimitrip Subject: practice quiz Date: Sun, 18 May 97 14:03:18 -0400 From: dimitrip@theory.lcs.mit.edu Hello, I was asked to write the practice quiz solutions. Alex told me that some of the problems are solved but she didn't tell me which ones. Does anybody know which problems are solved and where are the solutions. Please if you know do not ignore this message and reply to it as this will greatly speed up the writting of the practice quiz solutions. Thanks, Dimitri  0, unseen,, *** EOOH *** Mail-from: From karger@theory.lcs.mit.edu Sun May 18 12:01:10 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA28314; Sun, 18 May 97 16:04:44 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id QAA29655; Sun, 18 May 1997 16:01:10 -0400 Date: Sun, 18 May 1997 16:01:10 -0400 Message-Id: <199705182001.QAA29655@ibis> From: "David R. Karger" To: 6042-forum Subject: practice final questions ------- Start of forwarded message ------- Date: Sun, 18 May 1997 12:37:29 -0400 To: "David R. Karger" Subject: Questions on practice exam Dear Professor Karger, I'm trying to do the practice exam (Handout 36), and i'm having problems with: Problem 2 b. T(n) = T(n/2) + T(n/4) + and T(1) = 1 doesn't seem to give enough base cases. When i'm trying to calculate T(2), whould i assume that T(2/4) = 0 ? It is standard in such cases to assume T(2)=1 as well. This works because changing T(2) to something else only changes the answer by a constant factor, which disappears in the O-notation. Problem 3 b. How many pairs do 17 people form? When we say pairs, each person can "pair up" with only one other right? 17 people form 17-choose-2 = 136 pairs. we are considering all possible pair here. Thanks for your time, ------- End of forwarded message -------  0, unseen,, *** EOOH *** Mail-from: From miccianc@theory.lcs.mit.edu Sun May 18 12:36:16 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA28600; Sun, 18 May 97 16:33:42 EDT Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA14732; Sun, 18 May 97 16:36:16 EDT Date: Sun, 18 May 97 16:36:16 EDT Message-Id: <199705182036.AA14732@lark.lcs.mit.edu> From: Daniele Micciancio To: 6042-forum Subject: office hours I will hold office hours on Tuesday 10-12 instead of Monday this week. Daniele  0, unseen,, *** EOOH *** Mail-from: From dimitrip@theory.lcs.mit.edu Mon May 19 06:21:28 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA09013; Mon, 19 May 97 10:28:50 EDT Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA07762; Mon, 19 May 97 10:21:30 EDT Message-Id: <199705191421.AA07762@phoinix.lcs.mit.edu> To: karger Cc: 6042-tas Subject: practice quiz Date: Mon, 19 May 97 10:21:28 -0400 From: dimitrip@theory.lcs.mit.edu Problem 2b is wrong. We have T(1) = 1 T(2) = T(1) + 2 = 3 T(4) = T(2) + T(1) + 4 = 8 T(8) = T(4) + T(2) + 8 = 19, which is not less than 16. What shall I write in the solutions? Dimitri  0, unseen,, *** EOOH *** Mail-from: From miccianc@theory.lcs.mit.edu Mon May 19 09:20:20 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA12732; Mon, 19 May 97 13:17:45 EDT Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA14897; Mon, 19 May 97 13:20:20 EDT Date: Mon, 19 May 97 13:20:20 EDT Message-Id: <199705191720.AA14897@lark.lcs.mit.edu> From: Daniele Micciancio To: 6042-forum Subject: I have been asked to move my office hours to Thursday night at 7pm, as many students are expected to come at that time. I'll be in my office anyway Tuesday morning from 10 to 11 if any of you want to come. Daniele  1,, Mail-from: From dimitrip@theory.lcs.mit.edu Mon May 19 10:49:41 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA15207; Mon, 19 May 97 14:57:02 EDT Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA08123; Mon, 19 May 97 14:49:42 EDT Message-Id: <199705191849.AA08123@phoinix.lcs.mit.edu> To: miccianc Cc: 6042-teachers Subject: p quiz solutions Date: Mon, 19 May 97 14:49:41 -0400 From: dimitrip@theory.lcs.mit.edu *** EOOH *** Return-Path: To: miccianc Cc: 6042-teachers Subject: p quiz solutions Date: Mon, 19 May 97 14:49:41 -0400 From: dimitrip@theory.lcs.mit.edu Hello, The solutions to the practice quiz are finished and posted. Daniele, please take a look to see if they look OK. Dimitri From tiuzzol@theory.lcs.mit.edu Mon May 19 19:49:08 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA24389; Mon, 19 May 97 23:47:46 EDT From: tiuzzol@theory.lcs.mit.edu (Terri Iuzzolino) Received: by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA12419; Mon, 19 May 97 23:49:08 EDT Date: Mon, 19 May 97 23:49:08 EDT Message-Id: <199705200349.AA12419@peacock.lcs.mit.edu> To: 6042-tas@theory.lcs.mit.edu Subject: PS12 PS 12 is mostly done. the only things left are Problem 7b (which I wasn't sure how to do), and problem 8e and f. I've put them on the web anyways. I've no idea who's supposed to check them over. Terri From tiuzzol@MIT.EDU Tue May 20 08:53:39 1997 Return-Path: Received: from MIT.EDU (SOUTH-STATION-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA05162; Tue, 20 May 97 12:53:41 EDT Received: from RINGWORLD.MIT.EDU by MIT.EDU with SMTP id AA28990; Tue, 20 May 97 12:53:40 EDT Received: (from tiuzzol@localhost) by ringworld.MIT.EDU (8.6.11/8.6.11) id MAA20788 for 6042-forum@theory.lcs.mit.edu; Tue, 20 May 1997 12:53:39 -0400 Date: Tue, 20 May 1997 12:53:39 -0400 From: Terri Iuzzolino Message-Id: <199705201653.MAA20788@ringworld.MIT.EDU> To: 6042-forum@theory.lcs.mit.edu Subject: office hours I will have office hours from 5pm to 11pm on Thursday night in Tech Square (NE43-3rd floor lounge). Terri PS: A draft of PS12 solutions is on the web From gupta@theory.lcs.mit.edu Tue May 20 15:11:35 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA13539; Tue, 20 May 97 19:14:02 EDT From: gupta@theory.lcs.mit.edu (David Gupta) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA05622; Tue, 20 May 97 19:11:35 EDT Date: Tue, 20 May 97 19:11:35 EDT Message-Id: <199705202311.AA05622@owl.lcs.mit.edu> To: 6042-forum Subject: office hours Hello all, My office hours this week will be 5-7pm Wednesday in the 3rd floor lounge of LCS. There should be someone holding office hours every day through Thursday, and these provide a good opportunity for people to bring in their slips and old homework so we can get grades corrected. David G. From gupta@theory.lcs.mit.edu Tue May 20 15:23:29 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA13730; Tue, 20 May 97 19:25:55 EDT From: gupta@theory.lcs.mit.edu (David Gupta) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA05652; Tue, 20 May 97 19:23:29 EDT Date: Tue, 20 May 97 19:23:29 EDT Message-Id: <199705202323.AA05652@owl.lcs.mit.edu> To: 6042-forum Subject: oops Hello all, I may have misled some people on problem 1.e. on the practice quiz at the Sunday review session. I neglected to mention two of the important things that one must first establish before trying to prove that a relation is a bijection. Namely, one must establish that it is a function and that it is defined (as a function) on the entire set that you want to be its domain. Then you can establish that the function is surjective and injective. Proving all four things makes the argument symmetric, as it should be. David G. From karger@theory.lcs.mit.edu Tue May 20 18:56:14 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA16657; Tue, 20 May 97 22:59:50 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id WAA04832; Tue, 20 May 1997 22:56:14 -0400 Date: Tue, 20 May 1997 22:56:14 -0400 Message-Id: <199705210256.WAA04832@ibis> From: "David R. Karger" To: 6042-forum In-Reply-To: <199705202343.TAA01035@hope.mit.edu> (message from Srikant Sarda on Tue, 20 May 1997 19:43:37 EDT) Subject: Re: final exam You can bring 3 double sided crib sheets to the final exam. But don't kill yourselves trying to build them. More effective to use the time studying. From: Srikant Sarda Date: Tue, 20 May 1997 19:43:37 EDT How many sheets of notes can we have for the final exam? Thanks Srikant From karger@theory.lcs.mit.edu Thu May 22 07:31:47 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA24350; Thu, 22 May 97 11:35:17 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id LAA16109; Thu, 22 May 1997 11:31:47 -0400 Date: Thu, 22 May 1997 11:31:47 -0400 Message-Id: <199705221531.LAA16109@ibis> From: "David R. Karger" To: 6042-forum Cc: gupta, miccianc, dimitrip, alexv, tiuzzol@mit.edu Just a reminder to all of you to make sure we have your grades right by checking the slips we gave you (which have all our information through pset 9 or so) and the email that we recently sent or shortly will be sending (for psets 9-11). If you find any bugs, it is your responsibility to straighten them out before the final exam. Good luck tomorrow. -David Karger From tiuzzol@MIT.EDU Thu May 22 09:08:20 1997 Return-Path: Received: from MIT.EDU (PACIFIC-CARRIER-ANNEX.MIT.EDU) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA26784; Thu, 22 May 97 13:10:02 EDT Received: from W20-575-102.MIT.EDU by MIT.EDU with SMTP id AA08629; Thu, 22 May 97 13:09:24 EDT From: tiuzzol@MIT.EDU Received: by w20-575-102.MIT.EDU (940816.SGI.8.6.9/4.7) id NAA15695; Thu, 22 May 1997 13:08:20 -0400 Date: Thu, 22 May 1997 13:08:20 -0400 Message-Id: <199705221708.NAA15695@w20-575-102.MIT.EDU> Apparently-To: karger@theory.lcs.mit.edu Apparently-To: 6042-tas@theory.lcs.mit.edu Hey..... I'm supposed to take the Final today, but I need time to prepare for office hours and look at the practice final/lecture handouts. Would anyone be willing to take the final? I was supposed to take it around 2pm, you coudl probably do it sometime in the afternoon. I would be very grateful (I might even be willing to take on some of your grading of the final). Terri ~p From tiuzzol@theory.lcs.mit.edu Thu May 22 10:18:03 1997 Return-Path: Received: from peacock.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA28669; Thu, 22 May 97 14:16:33 EDT From: tiuzzol@theory.lcs.mit.edu (Terri Iuzzolino) Received: by peacock.lcs.mit.edu (5.65c/TOC-1.2C) id AA20703; Thu, 22 May 97 14:18:03 EDT Date: Thu, 22 May 97 14:18:03 EDT Message-Id: <199705221818.AA20703@peacock.lcs.mit.edu> To: 6042-forum@theory.lcs.mit.edu Subject: Tutorial solutions Tutorial solutions for Problem 1 on Tutorial 10, Tutorials 11, and 12 are on the web. I'm sorry I didn't manage to finish Tutorial 10. I hope the rest are useful. Terri From karger@theory.lcs.mit.edu Thu May 22 21:45:25 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA11876; Fri, 23 May 97 01:48:58 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id BAA11963; Fri, 23 May 1997 01:45:25 -0400 Date: Fri, 23 May 1997 01:45:25 -0400 Message-Id: <199705230545.BAA11963@ibis> From: "David R. Karger" To: 6042-forum Subject: grade checks We will be grading 6042 finals all of tomorrow afternoon in NE43 3rd floor. If you have not yet come by to correct your grades, that would be a good time. -David Karger From miccianc@theory.lcs.mit.edu Sun May 25 08:56:20 1997 Return-Path: Received: from lark.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA25677; Sun, 25 May 97 12:53:35 EDT Received: by lark.lcs.mit.edu (5.65c/TOC-1.2C) id AA15929; Sun, 25 May 97 12:56:20 EDT Date: Sun, 25 May 97 12:56:20 EDT Message-Id: <199705251656.AA15929@lark.lcs.mit.edu> From: Daniele Micciancio To: 6042-teachers Subject: hello everybody, I finished grading my part of problem 6 and 7. All finals are in my office. I am leaving for Italy in a few hours. My telephone number there is (+39)916710683. Have a good summer, Daniele From alexv@theory.lcs.mit.edu Mon May 26 06:11:01 1997 Return-Path: Received: from owl.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA09020; Mon, 26 May 97 10:13:24 EDT From: alexv@theory.lcs.mit.edu (Alex Vasilescu) Received: by owl.lcs.mit.edu (5.65c/TOC-1.2C) id AA10614; Mon, 26 May 97 10:11:01 EDT Date: Mon, 26 May 97 10:11:01 EDT Message-Id: <199705261411.AA10614@owl.lcs.mit.edu> To: 6042-teachers Hello Everyone, We all agreed to continue grading on Monday at 10am, didn't we? I'm here, so where is everyone else ... Alex. From dimitrip@theory.lcs.mit.edu Mon May 26 06:15:41 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA09211; Mon, 26 May 97 10:23:00 EDT Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA18463; Mon, 26 May 97 10:15:42 EDT Message-Id: <199705261415.AA18463@phoinix.lcs.mit.edu> To: alexv@theory.lcs.mit.edu (Alex Vasilescu) Cc: 6042-teachers, dimitrip In-Reply-To: Your message of Mon, 26 May 97 10:11:01 -0400. <199705261411.AA10614@owl.lcs.mit.edu> Date: Mon, 26 May 97 10:15:41 -0400 From: dimitrip@theory.lcs.mit.edu I think it was monday at 11 (if you need anything call me at 253-6165) Dimitri From dimitrip@theory.lcs.mit.edu Mon May 26 06:24:16 1997 Return-Path: Received: from phoinix.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA09381; Mon, 26 May 97 10:31:34 EDT Received: from phoinix.lcs.mit.edu by phoinix.lcs.mit.edu (5.65c/TOC-1.2C) id AA18537; Mon, 26 May 97 10:24:16 EDT Message-Id: <199705261424.AA18537@phoinix.lcs.mit.edu> To: 6042-teachers Cc: 6042-graders Subject: grades sheet Date: Mon, 26 May 97 10:24:16 -0400 From: dimitrip@theory.lcs.mit.edu Hello, There is no file named grades.xs3! I copied the latest version into dimitrip.xs3 and I am currently using it to add problem set 11 grades. Please,please,please do not overwrite and do not create another version of grades.xs3 Thanks, Dimitri From karger@theory.lcs.mit.edu Wed May 28 15:26:23 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA11659; Wed, 28 May 97 19:30:14 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id TAA08646; Wed, 28 May 1997 19:26:23 -0400 Date: Wed, 28 May 1997 19:26:23 -0400 Message-Id: <199705282326.TAA08646@ibis> From: "David R. Karger" To: 6042-forum Subject: grades Grades are now avilable for 6.042. You can get your grade in several ways: 1) Call my course secretary at 253 6098. This is the preferred remote method. 2) If phoning won't work, email your tutorial instructor. They may or may not have time to check and reply. I will not have time to respond before next week. 3) Come in to my office and pick up your final and grade. If you do this, please either bring a survey, fill one out while you are here, or be prepared to tell me that you already dropped one off at the final exam. Statistics for the final: median 120/200 mean 112/200 stdev 18.2 The median grade in the class was a B. -David Karger From be@theory.lcs.mit.edu Thu May 29 07:25:04 1997 Return-Path: Received: from swift.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA21901; Thu, 29 May 97 11:28:17 EDT From: be@theory.lcs.mit.edu (Be Blackburn) Received: by swift.lcs.mit.edu (5.65c/TOC-1.2C) id AA00646; Thu, 29 May 97 11:25:04 EDT Date: Thu, 29 May 97 11:25:04 EDT Message-Id: <199705291525.AA00646@swift.lcs.mit.edu> To: 6042-forum Subject: GRADES on Web SIS?? Hi, as per MIT policy- grades are given out ONLY to the person receiving them. Grades are NOT available by EMAIL. Anne Hunter tells me you can access YOUR grade on ``Web SIS''. Anyone know the exact Web address or way you do that?? thanks, Be From aidan@NOTHING.MIT.EDU Thu May 29 07:42:20 1997 Return-Path: Received: from NOTHING.MIT.EDU by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA22178; Thu, 29 May 97 11:41:51 EDT Received: (from aidan@localhost) by NOTHING.MIT.EDU (8.8.5/8.8.5) id LAA26778; Thu, 29 May 1997 11:42:20 -0400 From: "Aidan N.R. Low" Message-Id: <199705291542.LAA26778@NOTHING.MIT.EDU> To: be@theory.lcs.mit.edu (Be Blackburn) Cc: 6042-forum@theory.lcs.mit.edu Subject: Re: GRADES on Web SIS?? In-Reply-To: Your message of "Thu, 29 May 1997 11:25:04 EDT." <199705291525.AA00646@swift.lcs.mit.edu> Date: Thu, 29 May 1997 11:42:20 EDT Go to http://student.mit.edu. You'll need to be using Netscape (athena, mac, or windows) to do the whole rigamarole (sp?) about getting a digital certificate. It actually works pretty well. Aidan aidan@mit.edu http://www.mit.edu:8001/people/aidan/home.html From be@theory.lcs.mit.edu Thu May 29 08:24:23 1997 Return-Path: Received: from swift.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA23237; Thu, 29 May 97 12:27:36 EDT From: be@theory.lcs.mit.edu (Be Blackburn) Received: by swift.lcs.mit.edu (5.65c/TOC-1.2C) id AA00689; Thu, 29 May 97 12:24:23 EDT Date: Thu, 29 May 97 12:24:23 EDT Message-Id: <199705291624.AA00689@swift.lcs.mit.edu> To: 6042-forum Subject: yes, you can get YOUR 6.042 GRADE on Web SIS The WebSIS address is: http://student.mit.edu One needs to fetch a certificate first... Instructions and links are available on the main page. I would suggest that you recommend people use their Athena accounts to do this, as Netscape needs somewhere to store the certificate, and one's personal machine may not be the best bet. If Athena is used, one should use the US version of Netscape (start with the command netscape-US), because it has more powerful encryption capabilities. From karger@theory.lcs.mit.edu Mon Jun 2 08:19:47 1997 Return-Path: Received: from ibis (ibis.lcs.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA28345; Mon, 02 Jun 97 12:23:34 EDT Received: by ibis (SMI-8.6/TOC-1.2C) id MAA05326; Mon, 2 Jun 1997 12:19:47 -0400 Date: Mon, 2 Jun 1997 12:19:47 -0400 Message-Id: <199706021619.MAA05326@ibis> From: "David R. Karger" To: 6042-forum Subject: reporting error Someone pointed out a reporting error r.e. the final. The stdev was 36, not 18. From dimitrip@theory.lcs.mit.edu Fri Sep 12 14:11:38 1997 Return-Path: Received: from flamingo.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA09680; Fri, 12 Sep 97 18:15:25 EDT Received: from flamingo.lcs.mit.edu by flamingo.lcs.mit.edu (5.65c/TOC-1.2C) id AA00501; Fri, 12 Sep 97 18:11:43 EDT Message-Id: <199709122211.AA00501@flamingo.lcs.mit.edu> To: Jennifer K Koo Cc: 6042-tas Subject: Re: problem set 2 In-Reply-To: Your message of Fri, 12 Sep 97 17:57:27 -0400. <199709122157.RAA00312@scrubbing-bubbles.MIT.EDU> Date: Fri, 12 Sep 97 18:11:38 -0400 From: dimitrip@theory.lcs.mit.edu Hi Jennifer, I don't have your problem set. Maybe some other TA has it. I am forwrding your mail to the tas. Dimitri ------------------------------------------------------ Hi, I went to my tutorial today but my TA didn't have my graded problem set. Do you have it, and when will you be in your office Monday? My name is Jennifer Koo. And my TA is Santosh. Thank you. From mdakin@media.mit.edu Fri Sep 12 14:45:39 1997 Return-Path: Received: from media.mit.edu (aleve.media.mit.edu) by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA10050; Fri, 12 Sep 97 18:47:44 EDT Received: from ml.media.mit.edu (ml.media.mit.edu [18.85.13.107]) by media.mit.edu (8.7.5/ML961206) with SMTP id SAA31251; Fri, 12 Sep 1997 18:45:39 -0400 (EDT) Received: by ml.media.mit.edu; (5.65v3.2/1.1.8.2/12Apr96-0443PM) id AA25304; Fri, 12 Sep 1997 18:45:39 -0400 Date: Fri, 12 Sep 1997 18:45:39 -0400 (EDT) From: Mike Dakin To: 6.042-tas@theory.lcs.mit.edu, 6.042-ta@theory.lcs.mit.edu Subject: my ps1 Message-Id: X-Creature: monkey X-Rockgroup: Pink Floyd X-Languages: Scheme Java C C++ perl Latin MonkeySpeak X-Os: UNIX X-Advice: Never trust a shiftie munkie. X-Advicegiver: Steve Friedman Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Hi, I am trying to get my paws on my ps1 before Mon. I was assigned to an 8 AM tutorial. On the day of assignment at the end of class, I switched with someone, into Alex's 4-6 PM tutorial. When I passed in my ps1 I put it in Alex's box, because I was in his tutorial the first week. Today, we were not able to locate my problem set. I would like to look at it before doing ps2, so I don't make the same mistakes. If I can pick it up somewhere Sat. or Sun. let me know. -Mike "There should be somewhere in the works some kind of principle that uxles only make wuxles, and never vice versa, and so the world is turning from uxley character to wuxley character all the time." -Richard P. Feynman From dimitrip@theory.lcs.mit.edu Mon Sep 15 07:14:38 1997 Return-Path: Received: from flamingo.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA26447; Mon, 15 Sep 97 11:18:23 EDT Received: from flamingo.lcs.mit.edu by flamingo.lcs.mit.edu (5.65c/TOC-1.2C) id AA00955; Mon, 15 Sep 97 11:14:40 EDT Message-Id: <199709151514.AA00955@flamingo.lcs.mit.edu> To: 6042-tas Subject: lost problem set Date: Mon, 15 Sep 97 11:14:38 -0400 From: dimitrip@theory.lcs.mit.edu Hello, Andy Chang in Santosh 9am tutorial cannot locate is problem set. Does any of you have it? Please reply asap because he needs it for office hours. Thanks, Dimitri From dimitrip@theory.lcs.mit.edu Mon Sep 15 08:12:20 1997 Return-Path: Received: from flamingo.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA28586; Mon, 15 Sep 97 12:16:05 EDT Received: from flamingo.lcs.mit.edu by flamingo.lcs.mit.edu (5.65c/TOC-1.2C) id AA01087; Mon, 15 Sep 97 12:12:23 EDT Message-Id: <199709151612.AA01087@flamingo.lcs.mit.edu> To: 6042-tas Subject: lost problem set Date: Mon, 15 Sep 97 12:12:20 -0400 From: dimitrip@theory.lcs.mit.edu Hi again, Anjali Dhond is missing her ps1 (she has a grade). If you have it please contact her: adhond@mit.edu Thanks, Dimitri From dimitrip@theory.lcs.mit.edu Mon Sep 15 08:21:05 1997 Return-Path: Received: from flamingo.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA28847; Mon, 15 Sep 97 12:24:49 EDT Received: from flamingo.lcs.mit.edu by flamingo.lcs.mit.edu (5.65c/TOC-1.2C) id AA01105; Mon, 15 Sep 97 12:21:06 EDT Message-Id: <199709151621.AA01105@flamingo.lcs.mit.edu> To: 6042-tas Subject: lost pset Date: Mon, 15 Sep 97 12:21:05 -0400 From: dimitrip@theory.lcs.mit.edu Hello, jeffrey sheldon is looking for his problem set (also has a grade) so if you have it please contact him: jeffshel@mit.edu thanks, Dimitri From dimitrip@theory.lcs.mit.edu Mon Sep 15 15:57:12 1997 Return-Path: Received: from flamingo.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA13029; Mon, 15 Sep 97 20:00:57 EDT Received: from flamingo.lcs.mit.edu by flamingo.lcs.mit.edu (5.65c/TOC-1.2C) id AA01509; Mon, 15 Sep 97 19:57:14 EDT Message-Id: <199709152357.AA01509@flamingo.lcs.mit.edu> To: ftl, vempala Cc: 6042-tas Subject: solutions 2 Date: Mon, 15 Sep 97 19:57:12 -0400 From: dimitrip@theory.lcs.mit.edu are in /a/class/../handouts/H11-Sol2 Please take a look. Thanks, Dimitri From dimitrip@theory.lcs.mit.edu Fri Sep 19 06:21:59 1997 Return-Path: Received: from flamingo.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA17282; Fri, 19 Sep 97 10:25:46 EDT Received: from flamingo.lcs.mit.edu by flamingo.lcs.mit.edu (5.65c/TOC-1.2C) id AA03650; Fri, 19 Sep 97 10:22:01 EDT Message-Id: <199709191422.AA03650@flamingo.lcs.mit.edu> To: dchen@mit.edu, dnchen@mit.edu Cc: 6042-tas Subject: name Date: Fri, 19 Sep 97 10:21:59 -0400 From: dimitrip@theory.lcs.mit.edu Hello, You guys have the same name. Please make sure to write your middle initial on your 6.042 homework set and always include your recitation instructor's name so that we don't get your grades mixed up. Thanks, Dimitri From dimitrip@theory.lcs.mit.edu Fri Sep 19 06:53:07 1997 Return-Path: Received: from flamingo.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA17818; Fri, 19 Sep 97 10:56:53 EDT Received: from flamingo.lcs.mit.edu by flamingo.lcs.mit.edu (5.65c/TOC-1.2C) id AA03719; Fri, 19 Sep 97 10:53:08 EDT Message-Id: <199709191453.AA03719@flamingo.lcs.mit.edu> To: ftl, vempala Cc: 6042-tas Subject: ATTENTION Date: Fri, 19 Sep 97 10:53:07 -0400 From: dimitrip@theory.lcs.mit.edu That's the email with the correction. Is it OK? The error does not affect the homework because the problems in it rely on the definition of trees as acyclic graphs with $n$ nodes $n-1$ edges and the equivalent definitions. There is no problem on binary trees. --------------------------------------------------------- Yesterday in class, a FULL binary tree was defined and called a binary tree. A BINARY TREE can have one left child, one right child, both, or none. A FULL BINARY TREE can only have both or none. Also, the theorem about the number of leaves being the number of internal nodes +1 is correct but only for FULL BINARY TREES. Note that a full binary tree can only have an odd number of internal nodes. The proof in class was correct anyway, but having to prove something about a nonexistent set--the full binary trees with an even number of nodes was confusing. Dimitri From dimitrip@theory.lcs.mit.edu Tue Oct 7 12:39:49 1997 Return-Path: Received: from flamingo.lcs.mit.edu by theory.lcs.mit.edu (5.65c/TOC-1.2S) id AA18015; Tue, 07 Oct 97 16:43:48 EDT Received: from flamingo.lcs.mit.edu by flamingo.lcs.mit.edu (5.65c/TOC-1.2C) id AA13177; Tue, 07 Oct 97 16:39:51 EDT Message-Id: <199710072039.AA13177@flamingo.lcs.mit.edu> To: 6042-tas Cc: simitrip Subject: office hours Date: Tue, 07 Oct 97 16:39:49 -0400 From: dimitrip@theory.lcs.mit.edu Please remember to send me your midterm office hours. Dimitri