The least weakly compact cardinal can be unfoldable, weakly measurable and nearly θθ-supercompact

preprint2013arXivOpen access

Abstract

We prove from suitable large cardinal hypotheses that the least weakly compact cardinal can be unfoldable, weakly measurable and even nearly θθ-supercompact, for any desired θθ. In addition, we prove several global results showing how the entire class of weakly compact cardinals, 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 θκθ_κ-supercompact cardinals κκ, for nearly any desired function κ↦θκκ\mapstoθ_κ. 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.

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