Ultrafilters of character ω1

DOI10.2307/2275010zbMath0677.03035OpenAlexW3107981322MaRDI QIDQ3832560

Klaas Pieter Hart

Publication date: 1989

Published in: Journal of Symbolic Logic (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.2307/2275010

zbMATH Keywords

ultrafiltersrelative consistencyside-by-side Sacks forcing

Mathematics Subject Classification ID

Consistency and independence results (03E35) Cardinality properties (cardinal functions and inequalities, discrete subsets) (54A25) Other combinatorial set theory (03E05)

Related Items (2)

and Ultrafilters on ℚ and ω ⋮ Crowded and Selective Ultrafilters under the Covering Property Axiom

Cites Work

• Sacks forcing and the total failure of Martin's axiom
• Iterated perfect-set forcing
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