Ultrafilters without immediate predecessors in Rudin-Frolik order for regulars
Logic
2023-05-05 v1
Abstract
The aim of this paper is to construct ultrafilters without immediate predecessors in the Rudin-Frolik order in , where is a regular cardinal. This generalizes the problem posed by Peter Simon more than 40 years ago.
Cite
@article{arxiv.2305.02794,
title = {Ultrafilters without immediate predecessors in Rudin-Frolik order for regulars},
author = {Joanna Jureczko},
journal= {arXiv preprint arXiv:2305.02794},
year = {2023}
}
Comments
arXiv admin note: substantial text overlap with arXiv:2304.02143, arXiv:2304.00097, arXiv:2304.01398