Large cardinal ideals
Abstract
Building on work of Holy, L\"ucke and Njegomir \cite{MR3913154} on small embedding characterizations of large cardinals, we use some classical results of Baumgartner (see \cite{MR0384553} and \cite{MR0540770}), to give characterizations of several well-known large cardinal ideals, including the Ramsey ideal, in terms of generic elementary embeddings; we also point out some seemingly inherent differences between small embedding and generic embedding characterizations of subtle cardinals. Additionally, we present a simple and uniform proof which shows that, when is weakly compact, many large cardinal ideals on are nowhere -saturated. Lastly, we survey some recent consistency results concerning the weakly compact ideal as well as some recent results on the subtle, ineffable and -indescribable ideals on , and we close with a list of open questions.
Cite
@article{arxiv.2102.09591,
title = {Large cardinal ideals},
author = {Brent Cody},
journal= {arXiv preprint arXiv:2102.09591},
year = {2021}
}
Comments
Chapter for Research Trends in Contemporary Logic