8 problems.
- Continuity of maps into a product, and products of path-connected spaces
- The quotient \(\RR^n/U\) by a bounded open set is not Hausdorff
- Compact subsets of Hausdorff spaces are closed — Spring 2018.3
- Presentation of \(\pi_1(\Sigma_2)\), a surjection onto \(F_2\), and no covering \(\Sigma_2\to S^1\times S^1\)
- Why \(H_1\) of a point vanishes in the singular chain complex
- Homology of the mapping cone of a degree-\(k\) map \(S^n\to S^n\)
- Fixed points of continuous maps \(S^2\to S^2\)
- \(H_i(T,B)\) for a torus and the boundary of an embedded disk