Ultrafilters in a product of spaces

DOI10.2969/JMSJ/03420209zbMath0475.54003OpenAlexW1992941957MaRDI QIDQ1159905

Tsugunori Nogura

Publication date: 1982

Published in: Journal of the Mathematical Society of Japan (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.2969/jmsj/03420209

zbMATH Keywords

Frechet spacesbi-sequential spacefree ultrafilter on the natural numbersnon-metrizable Lasnev space

Mathematics Subject Classification ID

Sequential spaces (54D55) Cardinality properties (cardinal functions and inequalities, discrete subsets) (54A25) Product spaces in general topology (54B10)

Related Items (3)

Relative sequentiality ⋮ The Pytkeev property of a subspace of a product of countably many Lašnev spaces ⋮ On a local property of products of Lasnev spaces

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