A consistent counterexample in the theory of collectionwise Hausdorff spaces

DOI10.1007/BF02764862zbMath0688.54004OpenAlexW2087342167WikidataQ124804544 ScholiaQ124804544MaRDI QIDQ1263828

Saharon Shelah

Publication date: 1989

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

Full work available at URL: https://doi.org/10.1007/bf02764862

zbMATH Keywords

\(G_{\delta }\)-setscollectionwise Hausdorff spacesforcing modelnormal, first countable space

Mathematics Subject Classification ID

Lower separation axioms ((T_0)--(T_3), etc.) (54D10) Higher separation axioms (completely regular, normal, perfectly or collectionwise normal, etc.) (54D15) Counterexamples in general topology (54G20) Consistency and independence results in general topology (54A35)

Related Items (4)

A small Dowker space in ZFC ⋮ A total ladder system space by ccc forcing ⋮ Closed discrete subsets in first countable, countably metacompact spaces ⋮ Quasi-developable manifolds

Cites Work

• Unnamed Item
• Whitehead groups may not be free even assuming CH. II
• Proper forcing
• Whitehead groups may be not free, even assuming CH. I

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