Duality and the PCF theory

Saharon Shelah; Jindřich Zapletal

doi:10.4310/MRL.2002.v9.n5.a2

Duality and the PCF theory

Saharon Shelah^*, Jindřich Zapletal

^*Corresponding author for this work

Einstein Institute of Mathematics

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

We consider natural cardinal invariants hm_n and prove several duality theorems, saying roughly: If I is a suitably definable ideal and provably coy(I) ≥ hm_n, then non(I) is provably small. The proofs integrate the determinacy theory, forcing and pcf theory.

Original language	English
Pages (from-to)	585-595
Number of pages	11
Journal	Mathematical Research Letters
Volume	9
Issue number	5-6
DOIs	https://doi.org/10.4310/MRL.2002.v9.n5.a2
State	Published - 2002

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10.4310/MRL.2002.v9.n5.a2

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Duality and the PCF theory

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