Ultrafilters with small generating sets

DOI10.1007/BF02764864zbMath0681.03033MaRDI QIDQ1823240

Andreas Blass, Saharon Shelah

Publication date: 1989

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

zbMATH Keywords

nonprincipal ultrafiltercountable chain condition forcing extension

Mathematics Subject Classification ID

Consistency and independence results (03E35)

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Cites Work

• There may be simple \(P_{\aleph _ 1}\)- and \(P_{\aleph _ 2}\)-points and the Rudin-Keisler ordering may be downward directed
• Set theory. An introduction to independence proofs
• Iterated Cohen extensions and Souslin's problem
• Mathias Forcing which does not Add Dominating Reals
• Happy families
• Families of sets and functions

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