On Szymański theorem on hereditary normality of $\beta\omega$

DOI10.14712/1213-7243.2023.011OpenAlexW4376150426WikidataQ121809222 ScholiaQ121809222MaRDI QIDQ6133007

Sergei Logunov

Publication date: 17 August 2023

Published in: Commentationes Mathematicae Universitatis Carolinae (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.14712/1213-7243.2023.011

zbMATH Keywords

Čech-Stone compactificationnon-normality pointcountable \(\pi\)-weightbutterfly-point

Mathematics Subject Classification ID

Metric spaces, metrizability (54E35) Extensions of spaces (compactifications, supercompactifications, completions, etc.) (54D35) Higher separation axioms (completely regular, normal, perfectly or collectionwise normal, etc.) (54D15) Counterexamples in general topology (54G20) Remainders in general topology (54D40) Special constructions of topological spaces (spaces of ultrafilters, etc.) (54D80)

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