English

On the cofinality of the least $\lambda$-strongly compact cardinal

Logic 2022-02-04 v1

Abstract

In this paper, we characterize the possible cofinalities of the least λ\lambda-strongly compact cardinal. We show that, on the one hand, for any regular cardinal, δ\delta, that carries a λ\lambda-complete uniform ultrafilter, it is consistent, relative to the existence of a supercompact cardinal above δ\delta, that the least λ\lambda-strongly compact cardinal has cofinality δ\delta. On the other hand, provably the cofinality of the least λ\lambda-strongly compact cardinal always carries a λ\lambda-complete uniform ultrafilter.

Keywords

Cite

@article{arxiv.2202.01623,
  title  = {On the cofinality of the least $\lambda$-strongly compact cardinal},
  author = {Zhixing You and Jiachen Yuan},
  journal= {arXiv preprint arXiv:2202.01623},
  year   = {2022}
}

Comments

15 pages

R2 v1 2026-06-24T09:17:59.897Z