# Homework Assignments

- Problem set 4, due Monday 4/9.
- Problem set 3, due Monday 3/12.
**Update 3/12:**There is some sign involved in problem 3 that you should determine. Thanks to Yilong for pointing this out.**3/22:**Solutions. **Problem set 2**, due Friday 2/24: Hatcher p. 228 # 1, 2, 3(a), 6 (you may want to remind yourself of the CW structure of CP^n described in Chapter 0 for this one).- Problem set 1, due Monday 2/6.
**Update 1/30:**Two more problems have been added, and a typo was fixed in Problem 2 (the conclusion should involve reduced homology).**Update 2/2:**Typo fixed in Problem 4 (the retraction identity should be ri = id).