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arXiv · 2403.09329

On ultrafilters in ZF models and indecomposable ultrafilters

Eilon Bilinsky·Moti Gitik
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Abstract

We use indecomposable ultrafilters to answer some questions of Hayut, Karagila paper "Spectra of uniformity". It is shown that the bound on the strength by T. Usuba "A note on uniform ultrafilters in choiceless context" is optimal.

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Eilon Bilinsky, Moti Gitik. 2024-03-14. On ultrafilters in ZF models and indecomposable ultrafilters. https://arxiv.org/abs/2403.09329

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