## Abstract We force and obtain three models in which level by level equivalence between strong compactness and supercompactness holds and in which, below the least supercompact cardinal, GCH fails unboundedly often. In two of these models, GCH fails on a set having measure 1 with respect to certai
The failure of GCH at a degree of supercompactness
โ Scribed by Brent Cody
- Publisher
- John Wiley and Sons
- Year
- 2012
- Tongue
- English
- Weight
- 220 KB
- Volume
- 58
- Category
- Article
- ISSN
- 0044-3050
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โฆ Synopsis
Abstract
We determine the large cardinal consistency strength of the existence of a ฮปโsupercompact cardinal ฮบ such that \documentclass{article}\usepackage{amssymb}\begin{document}\pagestyle{empty}$\mathsf {GCH}$\end{document} fails at ฮป. Indeed, we show that the existence of a ฮปโsupercompact cardinal ฮบ such that 2^ฮป^ โฅ ฮธ is equiconsistent with the existence of a ฮปโsupercompact cardinal that is also ฮธโtall. We also prove some basic facts about the large cardinal notion of tallness with closure.
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