English

On maldistributed sequences and meager ideals

General Topology 2025-05-28 v1 Functional Analysis

Abstract

We show that an ideal I\mathcal{I} on ω\omega is meager if and only if the set of sequences (xn)(x_n) taking values in a Polish space XX for which all elements of XX are I\mathcal{I}-cluster points of (xn)(x_n) is comeager. The latter condition is also known as ν\nu-maldistribution, where ν:P(ω)R\nu: \mathcal{P}(\omega)\to \mathbb{R} is the {0,1}\{0,1\}-valued submeasure defined by ν(A)=1\nu(A)=1 if and only if AIA\notin \mathcal{I}. It turns out that the meagerness of I\mathcal{I} is also equivalent to a technical condition given by Misik and Toth in [J. Math. Anal. Appl. 541 (2025), 128667]. Lastly, we show that the analogue of the first part holds replacing ν\nu with φ\|\cdot\|_\varphi, where φ\varphi is a lower semicontinuous submeasure.

Cite

@article{arxiv.2505.20490,
  title  = {On maldistributed sequences and meager ideals},
  author = {Paolo Leonetti},
  journal= {arXiv preprint arXiv:2505.20490},
  year   = {2025}
}

Comments

J. Math. Anal. Appl., to appear

R2 v1 2026-07-01T02:41:08.823Z