TA, Spring 2022. Supplementary materials for exercise sessions:

- Hints for some exercises.
- Suggested solutions for Problem 11, Problem 12 and Problem 14.
- Links about Felix Hausdorff.

Other fun perspectives on topology:

- Lectures on knot theory by Anthony Bosman.
- Lectures on topology and geometry by Tadashi Tokieda.
- Point-set topology with the proof assistant Lean.