On the cardinality of all open subsets

DOI10.1007/BF02582024zbMath0611.54003OpenAlexW2008675451MaRDI QIDQ3750610

Yongbin Ruan

Publication date: 1986

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

Full work available at URL: https://doi.org/10.1007/bf02582024

zbMATH Keywords

number of open subsetshereditarily weakly collectionwise Hausdorffstrongly Hausdorff space

Mathematics Subject Classification ID

Cardinality properties (cardinal functions and inequalities, discrete subsets) (54A25)

Cites Work

• A note on weak θ-refinability
• A characterization of metacompactness in the class of θ-refinable spaces

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