Math 525 (Rezk, 1:00 MWF, 347 Altgeld Hall).

Here is the syllabus.


The main text is Hatcher. There are other references available online, such as:

Online lectures

All videos of online lectures (prerecorded and live) are available here:

Additional material

I'm going to post sections of my lecture notes from time to time, once I decide they are not nonsense. Note that these are written first for my benefit, and sometimes are a bit cryptic or omit details. Here are some illustrations/animations of topics we've seen.


Final. I have posted the final at Due at 11:59pm, Thursday, May 14.

Midterm 2. I have posted the midterm at It was due (on Monday before class. Here are solutions.


Last modified 11 May 2020 by Charles Rezk. Email: