Rapid ultrafilters and summable ideals
Logic
2012-08-21 v1
Abstract
This note answers the following question: Is it consistent that for an arbitrary tall summable ideal I_g there exists an I_g-ultrafilter which is not rapid? We show that assuming Martin's Axiom for \sigma-centered posets such ultrafilters exist for each tall summable ideal I_g.
Keywords
Cite
@article{arxiv.1208.3690,
title = {Rapid ultrafilters and summable ideals},
author = {Jana Flašková},
journal= {arXiv preprint arXiv:1208.3690},
year = {2012}
}