The compactness number of a compact topological space I
Murray Bell, Jan van Mill (1980)
Fundamenta Mathematicae
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Murray Bell, Jan van Mill (1980)
Fundamenta Mathematicae
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Szymański, Andrzej
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Maddalena Bonanzinga, Maria Cuzzupé, Bruno Pansera (2014)
Open Mathematics
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Two variations of Arhangelskii’s inequality for Hausdorff X [Arhangel’skii A.V., The power of bicompacta with first axiom of countability, Dokl. Akad. Nauk SSSR, 1969, 187, 967–970 (in Russian)] given in [Stavrova D.N., Separation pseudocharacter and the cardinality of topological spaces, Topology Proc., 2000, 25(Summer), 333–343] are extended to the classes with finite Urysohn number or finite Hausdorff number.
S. Mrówka, H. P. Tan (1972)
Czechoslovak Mathematical Journal
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