When a compact (countably compact) set is closed

DOI10.1023/A:1015679225933zbMath1012.54030MaRDI QIDQ1872885

Yanyan Li

Publication date: 18 May 2003

Published in: Acta Mathematica Hungarica (Search for Journal in Brave)

zbMATH Keywords

compactcountably compactnetregularneighborhoodsequencecluster pointclosurenormalclosed\(S_2\)Fréchetsecond countable\(S_1\)\(T_0\)\(T_1\)\(T_2\)

Mathematics Subject Classification ID

Compactness (54D30) Sequential spaces (54D55) Lower separation axioms ((T_0)--(T_3), etc.) (54D10) Higher separation axioms (completely regular, normal, perfectly or collectionwise normal, etc.) (54D15)

Cites Work

• Conditions implying continuity and perfectness of maps
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