Math 220: Mathematical Proof (Section 204)

This is the webpage for Math 220, Section 204, taught by me (Krishanu Sankar) at the University of British Columbia from January to April of 2019. See the main webpage for all assignments, exam times, and the textbook. This page is primarily meant for my contact information and supplemental notes that I think will help.

Instructor Contact Information

My main webpage
If you have a more detailed question, bring it to office hours. Or, if you cannot make it to office hours, we can arrange another time by email. Lastly, I have included the physical location of my office if you urgently need to find me or leave something for me, but it is not a good place for holding office hours and so I will be holding my office hours in LSK 300 instead.

How to address me:  You can just call me Krishanu. If you prefer, you may call me Dr. Sankar, or Professor. I will do my best to learn your names, so don't be shy about introducing yourself!
E-mail contact:  ksankar[at]math[dot]ubc[dot]ca. I will do my best to respond to email questions, both mathematical and non-mathematical.
My office (Not for office hours):  Earth Science Building room 4118 (PIMS)


Office Hours

I currently have two office hours every week, where you are welcome to come ask questions or work. If you would like to meet at another time, you can email me to make an appointment. As my other schedules solidify, I will add a third office hour.

Office Hours Time:  Mondays and Fridays 14:00-15:00 (right after class).
Office Hours Location:  LSK 300


Lecture

When:  Monday, Wednesday, and Friday, 13:00-14:00
Where:  Earth Sciences Building, room 1012

Mathematics is not a spectator sport. The way you learn is by actively participating in class. We will do practice exercises in class, and I suggest that you bring paper and a pen/pencil.

If you use any device with a screen (laptop, cellphone) then please sit towards the back of the room, to minimize distractions to others.

You can have food/drink in class, but please keep it quiet to avoid distracting those around you. Keep it neat and leave no trace.

Where and when to turn in homework

Homework will be due on Friday each week. Stay tuned for an announcement about where to turn it in.


(Optional) Getting Started on TeX

TeX is a powerful typesetting program which allows you to create beautiful mathematical expressions, diagrams, pictures, etc. It takes some practice to learn, but it is extremely useful and pays off later. You need two things: to download and install a set of packages on your computer, and then to get an editor (easy). The nice thing is that this is all totally open-source and so all of the resources are out there. But that also means you'll have to do a bit of digging around to understand what's going on.

TeX Distribution: Go here and follow the directions corresponding to the operating system you use. Another option given is to use an online service like Overleaf or ShareLaTeX to write your documents. While you can do this, it will make things a bit harder down the line. These options are really best if you want to write collaborative LaTeX documents with others in real-time (as opposed to using git).

Editor: I personally recommend TeXMaker. (Technically any preferred txt file editor will do, but then you have to compile files from the command line. TeXMaker has all the relevant functionality nicely built in and displayed.) Note that if you chose to write your documents in an online service, you don't need to download an editor.


Lecture Scans and Worksheets

Class 1 (Jan 2) notes
Class 2 (Jan 4) notes
Class 3 (Jan 7) notes
Class 4 (Jan 9) notes
Class 5 (Jan 11) notes
Class 6 (Jan 14) notes
Class 7 (Jan 16) notes
Class 8 (Jan 18) notes
Class 9 (Jan 21) notes
Class 10 (Jan 23) notes
Class 11 (Jan 25) notes
Class 12 (Jan 28) notes
Class 13 (Jan 30) notes
Class 14 (Feb 1) notes
Class 15 (Feb 4) notes
Class 16 (Feb 6) notes
Class 17 (Feb 8) notes
Class 18 (Feb 11) notes
Class 19 (Feb 13) notes
Class 20 (Feb 15) notes
Class 21 (Feb 25) notes
Class 23 (Mar 1) notes
Class 24 and 25 (Mar 4 and 6) notes
Class 26 (Mar 8) notes
Class 27 (Mar 11) notes
Class 28 (Mar 13) notes
Class 29 (Mar 15) notes
Class 30 (Mar 18) notes
Class 31 (Mar 20) notes
Class 32 (Mar 22) notes
Class 33 (Mar 25) notes
Class 34 (Mar 27) notes
Class 35 (Mar 29) worksheet and solutions
Class 36 (Apr 1) worksheet and solutions
Class 37 (Apr 3) notes