Talk:Intersection of Closed Set with Compact Subspace is Compact/Proof 2
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$K$ instead of $H$
I believe it should be:
- Hence $\family {U_\alpha} \cup S \setminus H$ is an open cover of $K$.
Rather than "open cover of $H$". This is because $S\setminus H$ by definition excludes $H$.
And:
- It follows by definition that a finite subcover:
- $\set {U_{\alpha_1}, U_{\alpha_2}, \ldots, U_{\alpha_n}, S \setminus H}$
- of $K$ exists.
Rather than "of $H$ exists". This is because $K$ is compact, yielding the finite subcover.
- Well spotted. Good call. --prime mover (talk) 20:03, 15 January 2022 (UTC)