Ultrafilters on singular cardinals of uncountable cofinality
Logic
2019-07-30 v1
Abstract
We prove that consistently there is a singular cardinal of uncountable cofinality such that is weakly inaccessible, and every regular cardinal strictly between and is the character of some uniform ultrafilter on .
Keywords
Cite
@article{arxiv.1907.11765,
title = {Ultrafilters on singular cardinals of uncountable cofinality},
author = {James Cummings and Charles Morgan},
journal= {arXiv preprint arXiv:1907.11765},
year = {2019}
}