tag:blogger.com,1999:blog-15466054756057613492016-11-11T10:35:57.485-08:00C6.3 Perturbation Methods (Fall 2009)Masonhttp://www.blogger.com/profile/04415369043595429843noreply@blogger.comBlogger36125tag:blogger.com,1999:blog-1546605475605761349.post-17743212713469367952010-05-25T07:50:00.000-07:002010-05-25T07:50:13.833-07:00Update on Consultation SessionsBecky Shipley's consultation session on Thursday 27 May has been changed to the following times: 10 am - 1pm.Masonhttp://www.blogger.com/profile/04415369043595429843noreply@blogger.com28tag:blogger.com,1999:blog-1546605475605761349.post-455697707119745842010-04-09T07:02:00.000-07:002010-05-06T08:23:37.668-07:00Consultation SessionsWeek 2: Monday: 11am - 12 noon (DHSR1, Me, 'drop in' ... well, because of a scheduling mess-up on the part of MI, this ended up being the 2007 exam at the spur of the moment---in case you want to get notes from somebody)<br />Thursday: 11am - 1pm (DHSR2, Becky Shipley) (2008 exam paper)<br />Thursday: 2pm - 4pm (DHSR2, Becky Shipley) (2008 exam paper)<br /><br />Week 3: Thursday: 3pm - 4pm (SGSR2, Cameron Hall, 'drop in')<br /><br />Week 4: Thursday: 11am - 1 pm (DHSR2, Becky Shipley, 2006 exam)<br />Thursday: 3pm - 4pm (SGSR2, Cameron Hall, 'drop in')<br /><br />Week 5: Monday: 10am - 12 noon (L2, Me) (2009 exam paper)<br />Thursday: 11am - 1 pm (DHSR2, Becky Shipley) ('drop in')<br />Thursday: 2pm - 4pm (DHSR2, Becky Shipley) ('drop in')<br /><br /><br /><b>Update (5/2/10):</b> I have noticed a couple of bugs in the MI's list of consultation sessions regarding what is being covered in which session. The correct information is <i>here</i>.Masonhttp://www.blogger.com/profile/04415369043595429843noreply@blogger.com4tag:blogger.com,1999:blog-1546605475605761349.post-63228093594357743762009-12-02T01:56:00.000-08:002009-12-02T01:56:32.299-08:00Minor Typo in Solution to Problem 7.6Becky Shipley points out: "There is a minor typo in the solution to qu 6 from sheet 7- at the top of page 3 the initial condition should be y(0)=1 (not y(0)=0) to get C_2 and hence eqn (6)."<br /><br />I don't have the latex file for that solution (just the .pdf), so I am announcing the correction here rather than updating the file.Masonhttp://www.blogger.com/profile/04415369043595429843noreply@blogger.com1tag:blogger.com,1999:blog-1546605475605761349.post-65948073288599513032009-11-12T11:25:00.001-08:002009-11-12T11:25:51.695-08:00Minor Correction to Lecture NotesI made a slight correction to the printed lecture notes in the nonlinear oscillator discussion from today. As I mentioned today in lecture, what I wrote on the board is correct, but I had forgotten to change it in the lectures notes when I was making my compiled corrections in September.Masonhttp://www.blogger.com/profile/04415369043595429843noreply@blogger.com0tag:blogger.com,1999:blog-1546605475605761349.post-70175683034533933312009-09-04T05:37:00.000-07:002009-10-12T14:41:44.096-07:00Welcome to Perturbation Methods (Fall 2009)The lectures will be held on Mondays and Thursdays from 12:00--1:00 pm in L2 in the MI. <br /><br />There are 6 classes, which are configured as follows:<br /><br />Wednesday: 11:00 am - 12:00 pm, LR1 in the MI, Tutor: Rebecca Shipley, TA: Thomas Woolley<br /><br />Wednesday: 12:30 - 1:30 pm, LR1 in the MI, Tutor: Rebecca Shipley, TA: Thomas Woolley<br /><br />Wednesday: 2:00 - 3:00 pm, SR2 in the MI (except for week 6, when it will be in DHSR1), Tutor: Cameron Hall, TA: Jean-Charles Seguis<br /><br />Wednesday: 3:00 - 4:00 pm, SR2 in the MI (except for week 6, when it will be in DHSR1), Tutor: Cameron Hall, TA: Jean-Charles Seguis<br /><br />Friday: 12:00 - 1:00 pm, DHSR3, Tutor: Phil Trinh, TA: Cara Morgan<br /><br />Friday: 1:00 - 2:00 pm, DHSR3, Tutor: Phil Trinh, TA: Cara Morgan<br /><br /><br />The lecture notes and 7 problem sheets have all been posted. Problem sheet N will be due on Monday (1:00 pm) of Week N + 1 for the Wednesday classes and on Wednesday (10:00 am) of Week N + 1 for the Friday classes. Make sure to place your sheets in the proper pigeonholes, which will magically appear at some point in the basement of the Mathematical Institute.Masonhttp://www.blogger.com/profile/04415369043595429843noreply@blogger.com0tag:blogger.com,1999:blog-1546605475605761349.post-85291442528315088182009-05-07T08:22:00.000-07:002009-05-07T08:25:07.156-07:008 May consultation session in MI (SR2)Tomorrow's consultation session is still at 3pm, but we have changed rooms. We will be in SR2 in the MI.Masonhttp://www.blogger.com/profile/04415369043595429843noreply@blogger.com0tag:blogger.com,1999:blog-1546605475605761349.post-85055973916664535182009-04-10T12:58:00.000-07:002009-05-02T07:23:22.442-07:00Consultation SessionsI will be running three consultation sessions for C6.3a:<br /><br />They will start on Friday at 3pm during weeks 1--3. The first two will last one hour and will take place in my office (DH 2). The one during third week will last from 3pm--5pm and will take place in L1 in the main building. This third consultation session will be a 'revision lecture' to cover the problems and solutions from the June 2008 exam. Note that I lectured this course last year, so I wrote the 4 questions in last year's exam. (The ones from 2007 and before were written by other people.)Masonhttp://www.blogger.com/profile/04415369043595429843noreply@blogger.com1tag:blogger.com,1999:blog-1546605475605761349.post-80286174895130433702008-11-29T05:55:00.000-08:002008-11-29T05:56:29.251-08:00Solution Set 7 postedI have posted the solutions for problem sheet 7. Note the separate document for problem 7.6.Masonhttp://www.blogger.com/profile/04415369043595429843noreply@blogger.com0tag:blogger.com,1999:blog-1546605475605761349.post-53980778046673170452008-11-22T07:08:00.002-08:002008-11-22T07:11:17.521-08:002 DPhil studentships in network science availableI am looking for postgraduate students. In particular, I have two D.Phil. studentships in network science available starting Fall 2009.<br /><br />One of them concerns <a href = "https://www.maths.ox.ac.uk/node/7803">financial networks</a>.<br /><br />The other one concerns <a href = "https://www.maths.ox.ac.uk/node/8085">political networks</a>.<br /><br /><br />Please contact me to discuss these open positions if you are interested.Masonhttp://www.blogger.com/profile/04415369043595429843noreply@blogger.com0tag:blogger.com,1999:blog-1546605475605761349.post-45665917402186770152008-11-22T07:08:00.001-08:002008-11-22T07:08:41.793-08:00Solution Set 6 postedI have posted solution set 6.Masonhttp://www.blogger.com/profile/04415369043595429843noreply@blogger.com0tag:blogger.com,1999:blog-1546605475605761349.post-33571005287436240682008-11-14T15:23:00.001-08:002008-11-14T15:23:36.736-08:00Solution Set 5 postedI've posted solution set 5.Masonhttp://www.blogger.com/profile/04415369043595429843noreply@blogger.com0tag:blogger.com,1999:blog-1546605475605761349.post-8818530898109304762008-11-07T16:56:00.000-08:002008-11-07T16:57:25.339-08:00Solution Set 4 postedI've posted solution set 4.Masonhttp://www.blogger.com/profile/04415369043595429843noreply@blogger.com0tag:blogger.com,1999:blog-1546605475605761349.post-20989821801766596242008-11-01T19:07:00.000-07:002008-11-01T19:08:12.959-07:00Solution Set 3 postedI've posted the solutions to the third problem sheet.Masonhttp://www.blogger.com/profile/04415369043595429843noreply@blogger.com0tag:blogger.com,1999:blog-1546605475605761349.post-75874535400788256412008-10-24T16:44:00.001-07:002008-10-24T16:44:41.080-07:00Solution Set 2 postedI have now posted the second solution sheet.Masonhttp://www.blogger.com/profile/04415369043595429843noreply@blogger.com0tag:blogger.com,1999:blog-1546605475605761349.post-81460930868698352622008-10-17T11:59:00.000-07:002008-10-17T12:00:06.448-07:00Solution Sheet 1 postedSolution sheet 1 is now posted.Masonhttp://www.blogger.com/profile/04415369043595429843noreply@blogger.com0tag:blogger.com,1999:blog-1546605475605761349.post-49471010790494153322008-10-16T08:14:00.000-07:002008-10-16T08:15:09.563-07:00Drinks Reception for Oxford Chapter of SIAM (Tuesday, 21 October, 5pm)On 21 October at 5pm, the <a href = "http://www.maths.ox.ac.uk/~siamstudentchapter">Oxford chapter of the Society for Industrial and Applied Mathematics (SIAM)</a> will be hosting a drinks reception in the common room of the Mathematical Institute. Please come!<br /><br />The SIAM chapter will be hosting several more events this year, including a young mathematicians' workshop in Hilary Term. Membership is free, and it will entitle you to free membership in SIAM (which is an excellent career move). This will give you a chance to interact with undergraduate students, postgraduate students, postdoctoral scholars, and faculty in applied mathematics and computational science.Masonhttp://www.blogger.com/profile/04415369043595429843noreply@blogger.com0tag:blogger.com,1999:blog-1546605475605761349.post-85664198156111370642008-10-06T02:01:00.000-07:002008-10-08T07:59:27.649-07:00Welcome to Perturbation Methods (C6.3a), Fall 2008This is the website for Maths C6.3 (Perturbation Methods) for the Michaelmas 2008 term.<br /><br />The lecture meets on Mondays at 3:00 pm and Tuesdays at 11:00 am in L2 in the Mathematical Institute. (As usual, lectures start 5 minutes after the hour and end approximately 5 minutes before the hour.)<br /><br />On this blog, I'll be posting links, answering questions that are of general relevance to the course, etc.<br /><br /><br />The classes (which meet starting in week 2) are as follows:<br /><br />(1) Monday 1:00 - 2:00 pm, DHSR3, Teacher: Becky Shipley, TA: Thomas Woolley<br /><br />(2) Monday 2:00 - 3:00 pm, DHSR3, Teacher: Me, TA: Tim Squires<br /><br />(3) Tuesday 12:30 - 1:30 pm, DHSR3, Teacher: Dave Hewett, TA: Tim Squires<br /><br />(4) Tuesday 1:30 - 2:30 pm, DHSR3, Teacher: Phil Trinh, TA: Thomas Woolley<br /><br /><br />For each N = 1,...,7, the Nth problem sheet is due by Friday at 5pm of week N. It will then be discussed in class in week N + 1.Masonhttp://www.blogger.com/profile/04415369043595429843noreply@blogger.com2tag:blogger.com,1999:blog-1546605475605761349.post-67174356353274088532008-05-02T07:10:00.000-07:002008-05-02T07:12:20.983-07:00Getting into Dartington House on Monday May 5thMonday is a bank holiday, and I have been sent a relevant note from the OCIAM secretary regarding getting into the building on that day. Here is the text of the message:<br /><br />"Please be sure that you let them know that although their university<br />card will work on the door that they will also need to use the digital<br />code and/or ring buzzer 9 for Kate or Peter.<br /><br />They will also need to get through the white card doors."<br /><br /><br />The instructions to call '9' should be on the front door, and that will allow someone to unlock the door for you.Masonhttp://www.blogger.com/profile/04415369043595429843noreply@blogger.com0tag:blogger.com,1999:blog-1546605475605761349.post-83065400818505139222008-03-01T09:18:00.000-08:002008-03-01T09:21:40.696-08:00Bicycles in London: eBourbaki mathematical modeling contestEliana Hechter of eBourbaki just sent me an e-mail about the following:<br /><br /><a href = "http://ebourbaki.com/">e-Bourbaki</a>, "a mathematical problem-solving firm whose mission is to solve the world's mathematical problems using contests to inspire innovation and creativity", sponsors a mathematical modeling contest every spring and the recently-announced 2008 contest pertains to <a href = "http://ebourbaki.com/problem-solvers/london-contest">bicycles in London</a>.<br /><br />I encourage any and all mathematics students to participate in this!<br /><br />Here is what Eliana wrote in her e-mail:<br /><br />I am writing to inform you about an upcoming contest for students of<br />mathematics, computer science, and engineering in the United<br />Kingdom. The contest, which asks students to mathematically model a<br />low-cost bicycle rental service for the City of London, will<br />commence at 5pm on Monday, May 5, 2008 and end at 5pm on Monday, May<br />12, 2008. We hope that you will encourage the students with whom you<br />have contact to participate.<br /><br />The first prize is ?1000 and winning projects may have the potential<br />to be implemented as London strives to become more sustainable and<br />efficient in its transportation infrastructure.<br /><br />The contest is hosted by eBourbaki, a mathematical problem-solving<br />website I founded dedicated to increasing interest and involvement<br />in mathematics in the global community, and is sponsored by Winton<br />Capital. Further information can be found at our website,<br />www.ebourbaki.com. Participation in the contest requires contestants<br />to register with eBourbaki website and we encourage participants to<br />do so as soon as possible, to stay informed about contest details.<br /><br />In the past others have used eBourbaki questions as part of their<br />teaching program, or as a 'final project' for applied modeling<br />classes. We are happy to work with professors if they choose to<br />consider this option.Masonhttp://www.blogger.com/profile/04415369043595429843noreply@blogger.com0tag:blogger.com,1999:blog-1546605475605761349.post-65700334356428856062007-12-16T09:34:00.000-08:002007-12-16T09:40:17.250-08:00Revised Answer Sheet 7 + typos in lecture notesI have posted a revised answer key for the 7th problem sheet. I have corrected some typos and added a few clarifying remarks.<br /><br /><br />Please also note a typo in the lecture notes on turning points in WKB solution:<br /><br />(1) With a transformation of the form [1 + delta * z = x], you want delta = epsilon^{2/3}<br /><br />(Take a look at the WKB solution to problem 7.6 and you'll see this same scaling. This is what one gets for 'typical' first-order turning points, and that's what leads to Airy's equation.)Masonhttp://www.blogger.com/profile/04415369043595429843noreply@blogger.com1tag:blogger.com,1999:blog-1546605475605761349.post-33498655079076185062007-11-29T15:05:00.001-08:002007-11-29T15:05:51.635-08:00WKB solution for problem 7.6A WKB solution (courtesy Peter Howell) for problem 7.6 has now been posted.Masonhttp://www.blogger.com/profile/04415369043595429843noreply@blogger.com0tag:blogger.com,1999:blog-1546605475605761349.post-9176870961795199552007-11-28T11:06:00.000-08:002007-11-28T11:07:06.950-08:00Solution Set 7 postedSolution set 7 is now posted. Note that there is a separate Maple file that goes with this solution set.Masonhttp://www.blogger.com/profile/04415369043595429843noreply@blogger.com0tag:blogger.com,1999:blog-1546605475605761349.post-33863226914944362192007-11-23T08:03:00.001-08:002007-11-23T08:03:50.532-08:00Corrected version of Solution Set 6 postedI corrected a few typos in Solution Set 6 and posted the revised version.Masonhttp://www.blogger.com/profile/04415369043595429843noreply@blogger.com0tag:blogger.com,1999:blog-1546605475605761349.post-23498618951922233422007-11-22T04:20:00.001-08:002007-11-22T04:20:59.466-08:00Solution Set 6 postedThe solutions for problem sheet 6 are posted.Masonhttp://www.blogger.com/profile/04415369043595429843noreply@blogger.com0tag:blogger.com,1999:blog-1546605475605761349.post-68614376272904947682007-11-15T13:47:00.000-08:002007-11-15T13:48:11.514-08:00Solution Set 5 postedI've posted solution set 5.Masonhttp://www.blogger.com/profile/04415369043595429843noreply@blogger.com0