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zbMATH Open
Article . 2015
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Mixed Levels of Indestructibility

Mixed levels of indestructibility
Authors: Apter, Arthur W.;

Mixed Levels of Indestructibility

Abstract

Summary: Starting from a supercompact cardinal \(\kappa \), we force and construct a model in which \(\kappa \) is both the least strongly compact and least supercompact cardinal and \(\kappa \) exhibits mixed levels of indestructibility. Specifically, \(\kappa \)'s strong compactness, but not its supercompactness, is indestructible under any \(\kappa \)-directed closed forcing which also adds a Cohen subset of \(\kappa \). On the other hand, in this model, \(\kappa \)'s supercompactness is indestructible under any \(\kappa \)-directed closed forcing which does not add a Cohen subset of \(\kappa \).

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Keywords

lottery sum, Large cardinals, strongly compact cardinal, Prikry sequence, Prikry forcing, non-reflecting stationary set of ordinals, strong cardinal, indestructibility, supercompact cardinal, Consistency and independence results

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold