Unfoldable cardinals and the GCH

Journal of Symbolic Logic 66 (3):1186-1198 (2001)
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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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Joel David Hamkins
Oxford University