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On closed unbounded sets consisting of former regulars

Moti Gitik
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Abstract

We give the optimal conditions for the existence of a club consisting of former regular over an inaccessible and a measurable. The foricing construction based on iteration of distributive posets.

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Moti Gitik. 1994-01-20. On closed unbounded sets consisting of former regulars. https://arxiv.org/abs/math/9401204

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