Another characterization of meager ideals
General Topology
2021-09-14 v1 Functional Analysis
Abstract
We show that an ideal on the positive integers is meager if and only if there exists a bounded nonconvergent real sequence such that the set of subsequences [resp. permutations] of which preserve the set of -limit points is comeager and, in addition, every accumulation point of is also an -limit point (that is, a limit of a subsequence such that ). The analogous characterization holds also for -cluster points.
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Cite
@article{arxiv.2109.05266,
title = {Another characterization of meager ideals},
author = {Marek Balcerzak and Szymon Glab and Paolo Leonetti},
journal= {arXiv preprint arXiv:2109.05266},
year = {2021}
}
Comments
10pp