The first derived limit and compactly \(F_\sigma\) sets

DOI10.2969/JMSJ/05040831zbMath0930.03054OpenAlexW2041590141MaRDI QIDQ1298032

Stevo Todorčević

Publication date: 22 September 1999

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/05040831

zbMATH Keywords

Martin's axiomcompact setsdescriptive set theoryproper forcing axiom\(F_\sigma\)-setsČech's cohomology groupsinverse system of Abelian groups

Mathematics Subject Classification ID

Descriptive set theory (03E15) Projectives and injectives (category-theoretic aspects) (18G05) Continuum hypothesis and Martin's axiom (03E50) Homology and homotopy of topological groups and related structures (57T99)

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