Unfoldable cardinals and the GCH

Journal of Symbolic Logic 66 (3):1186-1198 (2001)

Authors
Joel David Hamkins
Oxford University
Abstract
Unfoldable cardinals are preserved by fast function forcing and the Laver-like preparations that fast functions support. These iterations show, by set-forcing over any model of ZFC, that any given unfoldable cardinal κ can be made indestructible by the forcing to add any number of Cohen subsets to κ
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DOI 10.2307/2695100
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Gap Forcing: Generalizing the Lévy-Solovay Theorem.Joel David Hamkins - 1999 - Bulletin of Symbolic Logic 5 (2):264-272.

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