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arXiv:1601.01409 [math.LO]AbstractReferencesReviewsResources

On the spectrum of characters of ultrafilters

Shimon Garti, Menachem Magidor, Saharon Shelah

Published 2016-01-07Version 1

We show that the character spectrum $Sp_\chi(\lambda)$, for a singular cardinal $\lambda$ of countable cofinality, may include any prescribed set of regular cardinals between $\lambda$ and $2^\lambda$.

Categories: math.LO
Subjects: 03E05, 03E55
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