Tag: general-topology
- The coset/quotient space of a normal subgroup of a topological group is a topological group
- Real Analysis – Rudin Exercise 2.13: Last Part Explained
- General Topology – Realcompact Metrizable Space and Non-Measurable Cardinality
- Real Analysis – Heine-Borel Theorem for Any Compact Set
- Topology – Are O(n) and SO(n) x Z2 Homeomorphic?
- Prove that it is first countable
- The closest point to $x_0$ exists in a compact subset $K$
- $\sigma$-Compact Space – Example of a $\sigma$-Compact but Not Hemicompact Space
- Proof of Lemma 2.3 p.354 Massey
- Union of a locally finite collection of compact set is compact