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arXiv · 2304.01398

Decreasing chains without lower bounds in Rudin-Frol\'ik order for regulars

Joanna Jureczko
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Abstract

The aim of this paper is to prove that for there exist a chain in the Rudin-Frol\'ik order of $\beta\kappa\setminus \kappa$ of length $\mu$ with $\kappa \leqslant \mu \leqslant 2^\kappa$ for regular $\kappa> \omega$ without a lower bound.

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Joanna Jureczko. 2023-03-28. Decreasing chains without lower bounds in Rudin-Frol\'ik order for regulars. https://arxiv.org/abs/2304.01398

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