Abstract
We prove from suitable large cardinal hypotheses that the least weakly compact cardinal can be unfoldable, weakly measurable and even nearly θ-supercompact, for any desired θ. In addition, we prove several global results showing how the entire class of weakly compactcardinals, a proper class, can be made to coincide with the class of unfoldable cardinals, with the class of weakly measurable cardinals or with the class of nearly θκ-supercompact cardinals κ, for nearly any desired function κ↦θκ. These results answer several questions that had been open in the literature and extend to these large cardinals the identity-crises phenomenon, first identified by Magidor with the strongly compact cardinals.
Original language | English |
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Pages (from-to) | 491-510 |
Number of pages | 20 |
Journal | Archive for Mathematical Logic |
Volume | 54 |
Issue number | 5-6 |
DOIs | |
State | Published - 27 Aug 2015 |
Keywords
- Identity crisis
- Nearly supercompact
- Unfoldable
- Weakly compact
- Weakly measurable