Cardinal functionsFθ(X) andtθ(X) for H-closed spaces

DOI10.2989/16073606.2013.779783zbMath1404.54002arXiv1206.6555OpenAlexW2328877237MaRDI QIDQ2968624

Filippo Cammaroto, Andrei Catalioto, Jack R. Porter

Publication date: 20 March 2017

Published in: Quaestiones Mathematicae (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/1206.6555

zbMATH Keywords

closurefree sequence\(\theta\)-closureUrysohn spacesH-closed spaces\(\theta\)-free sequence\(t(X)\), \(t_\theta(X)\), \(F(X)\), \(F_\theta(X)\) compact spaces

Mathematics Subject Classification ID

``(P)-minimal and ``(P)-closed spaces (54D25) Extensions of spaces (compactifications, supercompactifications, completions, etc.) (54D35) Cardinality properties (cardinal functions and inequalities, discrete subsets) (54A25) Lower separation axioms ((T_0)--(T_3), etc.) (54D10) Counterexamples in general topology (54G20)

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