8 problems.
- Continuous images of compact sets are compact
- A quotient with connected base and connected fibers is connected
- Metrizable spaces are \(T_4\)
- Disjoint compact subsets of a Hausdorff space can be separated by opens
- Fundamental group of \(\RR^2\) minus three points
- Fundamental group of \(S^3\) modulo an order-4 linear action
- A \(\Delta\)-complex structure on \(S^3\) with one 3-simplex, and its chain complex
- CW structure and homology of \(S^2\) with poles joined by a segment