Non-constructive galois-tukey connections

Journal of Symbolic Logic 62 (4):1179-1186 (1997)
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Abstract

There are inequalities between cardinal characteristics of the continuum that are true in any model of ZFC, but without a Borel morphism proving the inequality. We answer some questions from Blass [1]

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10.2307/2275635

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Citations of this work

No Borel Connections for the Unsplitting Relations.Heike Mildenberger - 2002 - Mathematical Logic Quarterly 48 (4):517-521.

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Descriptive Set Theory.Yiannis Nicholas Moschovakis - 1982 - Studia Logica 41 (4):429-430.

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