Exercises of Robert Geroch, *Mathematical Physics*

- Exercise 7 (When the associated morphisms in direct products/sums are epi/mono)
- Exercise 106 (Equivalent categories)
- Exercise 182 (Universal definition of indiscrete topology)
- Exercise 185 (Direct sum of Hausdorff topological spaces) (unfinished)
- Exercise 224 (Connected subsets one of which meets the closure of the other)
- Exercise 225 (Union of transitively overlapping connected spaces)