Takashi Noiri
Abstract
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A topological space X is said to be S-closed if every cover of X by regular closed sets of X has a finite subcover. In this note some characterizations of S-closed Hausdorff spaces are obtained.
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A topological space X is said to be S-closed if every cover of X by regular closed sets of X has a finite subcover. In this note some characterizations of S-closed Hausdorff spaces are obtained.
Key concepts: Hausdorff space, Mathematics, Normal space, Urysohn and completely Hausdorff spaces, Topological space, Cover (algebra), Paracompact space, Regular space