Messages - Page 2

First, today's botched upload is fixed. The correct one is 9 pages - if yours is 8, then reload.

Then for seminar problems: 

• As pointed out in class, I have drafted seminar assignments in a separate document - link from the semester page.
• The March 8 assignment:
  Maybe there should have been one more problem, and maybe there will be one - but you won't be able to do them all by today, so I can have another look. I'll post a message if I update.
• Later seminars: draft. In particular, I will have to think over how many complete exam sets to assign. It might be good to leave a few of them for you after teaching is done.

Under Lecture notes, I have made three uploads, but it is less to read than it looks. The first one is the big one:

• Tomorrow's topic: calculus of variations. 
• One page with one leftover detail. I will cover it briefly tomorrow.
• A note on how complex numbers work. This is totally optional. Browse it if you think it helps to understand what complex numbers are; otherwise, just do not spend time on it.

Last bullet item new, links to some additional problems.

Problems for next week posted, though I have a gut feeling that it might be a bit too much; if you feel that you have done the week's workload with two of the problems left, chances are that others & Sondre will agree with you. The leftovers will be assigned for the subsequent seminar. 

Also, I uploaded a draft write-up of differential equation systems (Thursday's and next Tuesday's topic). I might have to update it. 

Tomorrow:

x''+ax'+bx = f(t), a and b constants - and then linear systems of two diff.eq's and how to reduce them to a second-order.

Problems for next week's seminar Wednesday 13th:

To be finalized after tomorrow's lecture (when I know how far we got), but you can start at the top of this, all compendium except noted: 

• Use integration by parts to find an antiderivative of t cos t.
• 1-13
• 6-01
• 6-02. In (b), try the hint and fit coefficients!
• 6-08: At least do enough to catch the point.
• 6-10. It is not curriculum to solve this equation from scratch, but given the hint it is curriculum to be able to construct the general solution of the homogeneous. For (b) ... make an educated guess!
• 6-12. Requires the Leibniz rule. (c) might at worst require Thursday's lecture. 
• 7-01. Might at worst require Thu...

So I made a manual-typing mistake when we moved the seminar, and deleted the wrong letter from a problem. Correction:

• Eigenvalues/-vectors & friends: problems (f), (h), (i), (j) of this compulsory term paper problem set from MatNat: http://www.uio.no/studier/emner/matnat/math/MAT1001/h16/oblig1_eng.pdf

Notice it now says "(h)", as it should. Leave out the "(g)"!

• The lecture schedule. After done with linear algebra, there will be differential equations.
• Following the order of last year's lecture notes is not that feasible anymore, so from this year's front page I have linked to each of them in order.
  (Also for completeness number 6 for lecture 1, but I used the typeset one instead.)
• The lecture note used today has the last example corrected (two pages replaced). 
  Annoying yes. 
• NOT YET corrected: seminar assignments for #2 ff. 

• Is Thursday 7th of February 1615-18 a feasible slot for you?  I got informed that this is possible even though it is Aktualitetsuka (which eats the Wednesday slot). 
  Please check your calendars, I will ask you tomorrow Friday.
• By tomorrow afternoon I will decide whether to shuffle differential eq's before convexity.  
  (Olav made me aware of one possible catch that I need to check out first.)  

Then, chronological (possible) changes: 

• First seminar will be the upcoming Wednesday the 30th. 
  • Right now it is under "Lectures" in the schedule, is that OK? Do you need to get it moved to "Seminars"?
• As mentioned: possible lecture/seminar Thursday February 7th at 1615.
• Friday 8th might change from "seminar" to "lecture" depending on what we do about the 7th.
• Tuesday 12th: Likely I have a substitute, in...

• Will meet Olav tomorrow, please forward your thoughts to him.
• The 2018 solution to the MAT1001 problems has a bug, an element was copied in as zero and thus the "wrong problem" was solved.
• Most likely, the seminar will be next Wednesday.  Schedule to be updated.  
• Old lecture note #3 corrected with a missing -lambda.

The schedule now has "Workshop" Tuesdays 1615-18, starting tomorrow. 

Tomorrow's lecture will cover eigenvalues and eigenvectors. I will largely follow last year's notes (slightly fixed today: made a link clickable and fixed a single typo). And maybe the problems I posted.

Tomorrow - or Wednesday at the latest - we need to decide upon time for the first couple of seminars. 

• I posted some problems in Canvas.
  • "Experiment": is this a good format?
  • The error at the end of the lecture (I wrote a number wrong from my notes, it seems that the calculations I did were correct) is part of it. Both the one I wrote and the one I intended. 
• For the schedule, I also imported last year's problem sets; that means it is subject to change.
• The "Workshop": Tuesday 1615-18, but I will have to wait until Monday to try to get it into the schedule.
• I have also updated the lecture part of the schedule to reflect current progress.

Posting this both at course page and in Canvas ... still. 

• BUG at the end of the lecture: top-right of the board, should be "Lin. INDEP <=>".
• I didn't outright ask you whether you wanted that workshop.  Please remind me on Friday.  
  • But if so: Tuesdays 16-18 is the proposal, and it seems easy to find rooms.  
• Q for Friday: Would you want a seminar or seminar-type session on Friday 25th?  
• Canvas question, think of it for Friday:
  Canvas supports multiple choice.  I am not too much of a fan of that format (the important thing is show your work, not be good at guessing), but 
  • do you want a few "sanity check questions" posted there?  Do not expect them to look like exam questions
  • would that affect your idea of whether Canvas should be used or avoided?
• Topic for Friday: Will start on 2018-lecture2.  An hour after...

• Please make your mind up on whether you want that "workshop" arrangement;
• in any case, hours for that or for my consultation hours in order not to conflict with the rest of your schedule
  (does Wednesday afternoon suit you?)
• Topics: conclude differentiation (see the slide), and start on linear independence and rank. (If you want notes: 2018's "lecture 1" notes and "lecture 2 notes".) 

I created a couple of modules in Canvas. Two are links to material in the left margin and from previous year's version. One is what I thought would be a short note on the first lecture, but which became quite 14 slides. If you don't want to go to Canvas, you find the slideset at this direct link.

I have taken as "null hypothesis" that students want Canvas, but let us discuss that in the first lecture.

Welcome to Mathematics 3!

There are a few questions I will discuss with you in the first lecture on Tuesday; if you cannot attend, but have opinions, please let me know by e-mail.

• What other courses do you attend this semester? Any particular demands or desiderata? Any term paper deadlines where it would be unwise for Math 3 to put "this requires your full attention now and would be hard to pick up later" topics?
• "Workshops" like Mathematics 2.  Last Mathematics 3, I did by popular demand, I moved my consultation hours to room 1220 - but not too many did actually show up.  
  • Is there an actual demand for it?  
  • If so, when suits you? Check your calendars. 
• We put up three lectures the first few weeks in order to get quicker to new topics.  We can have some pr...