The double density spectrum of a topological space

DOI10.1007/S11856-022-2453-9zbMath1525.54003arXiv2109.10823OpenAlexW4313256523MaRDI QIDQ6165175

Jan van Mill, Lajos Soukup, István Juhász, Zoltán Szentmiklóssy

Publication date: 31 July 2023

Published in: Israel Journal of Mathematics (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/2109.10823

zbMATH Keywords

densitycompactregularHausdorffhereditary densitydouble density spectrum

Mathematics Subject Classification ID

Compactness (54D30) Cardinality properties (cardinal functions and inequalities, discrete subsets) (54A25) Subspaces in general topology (54B05) Lower separation axioms ((T_0)--(T_3), etc.) (54D10) Counterexamples in general topology (54G20) Consistency and independence results in general topology (54A35) Other combinatorial set theory (03E05)

Cites Work

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• \(\pi\) (X)\(=\delta (X)\) for compact X
• Separable extensions of first countable spaces
• Cardinalities of dense sets
• The \Sup = max Problems for &#948

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