compact space and intersection of closed sets

1. Proposition

Let \((X, \mathcal{T})\) be a topological space. TFAE:

  1. \(X\) is compact, as in there exists a finite subcover
  2. for closed sets \(A_i \subseteq X\) with \(\bigcap A_i = \emptyset\) there exist finitely many \(A_i\) such that \(\bicgap_{i=1}^n A_i = \emptyset\)

2. Proof

Date: nil

Author: Anton Zakrewski

Created: 2024-10-13 So 15:42