On configurations concerning cardinal characteristics at regular cardinals
Logic
2021-02-02 v2 Combinatorics
Abstract
We study the consistency and consistency strength of various configurations concerning the cardinal characteristics at uncountable regular cardinals . Motivated by a theorem of Raghavan-Shelah who proved that , we explore in the first part of the paper the consistency of inequalities comparing with and . In the second part of the paper we study variations of the extender-based Radin forcing to establish several consistency results concerning from hyper-measurability assumptions, results which were previously known to be consistent only from supercompactness assumptions. In doing so, we answer several questions which appeared in the literature.
Keywords
Cite
@article{arxiv.1905.06067,
title = {On configurations concerning cardinal characteristics at regular cardinals},
author = {Omer Ben-Neria and Shimon Garti},
journal= {arXiv preprint arXiv:1905.06067},
year = {2021}
}
Comments
25 pages, to appear