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Combined Maximality Principles up to large cardinals

Published online by Cambridge University Press:  12 March 2014

Gunter Fuchs
Gunter Fuchs*
Affiliation:
Institut für Mathematische Logik und Grundlagenforschung, Westfälische Wilhelms-Universität Münster, Einsteinstraβe 62, 48149 Münster, Germany, E-mail: gfuchs@uni-muenster.de
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Abstract

The motivation for this paper is the following: In [4] I showed that it is inconsistent with ZFC that the Maximality Principle for directed closed forcings holds at unboundedly many regular cardinals κ (even only allowing κ itself as a parameter in the Maximality Principle for <κ-closed forcings each time). So the question is whether it is consistent to have this principle at unboundedly many regular cardinals or at every regular cardinal below some large cardinal κ (instead of ∞), and if so, how strong it is. It turns out that it is consistent in many cases, but the consistency strength is quite high.

Type
Research Article
Information
The Journal of Symbolic Logic , Volume 74 , Issue 3 , September 2009 , pp. 1015 - 1046
Copyright
Copyright © Association for Symbolic Logic 2009

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References

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