On maldistributed sequences and meager ideals

We show that an ideal I on ω is meager if and only if the set of sequences ( x n ) taking values in a Polish space X for which all elements of X are I -cluster points of ( x n ) is comeager. The latter condition is also known as ν -maldistribution, where ν : P ( ω ) → R is the { 0 , 1 } -valued submeasure defined by ν ( A ) = 1 if and only if A ∉ I . It turns out that the meagerness of I is also equivalent to a technical condition given by Mišík and Tóth in [J. Math. Anal. Appl. 541 (2025), 128667]. Lastly, we show that the analogue of the first part holds replacing ν with ‖ ⋅ ‖ φ , where φ is a lower semicontinuous submeasure.

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Journal
Journal of Mathematical Analysis and Applications
Published
2025-05-29
DOI
https://doi.org/10.1016/j.jmaa.2025.129748
Primary Topic
Rings, Modules, and Algebras
Type
article
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article

On maldistributed sequences and meager ideals

Paolo Leonetti
Journal of Mathematical Analysis and Applications
Rings, Modules, and Algebras
article

On maldistributed sequences and meager ideals

Paolo Leonetti
article en

Abstract

We show that an ideal I on ω is meager if and only if the set of sequences ( x n ) taking values in a Polish space X for which all elements of X are I -cluster points of ( x n ) is comeager. The latter condition is also known as ν -maldistribution, where ν : P ( ω ) → R is the { 0 , 1 } -valued submeasure defined by ν ( A ) = 1 if and only if A ∉ I . It turns out that the meagerness of I is also equivalent to a technical condition given by Mišík and Tóth in [J. Math. Anal. Appl. 541 (2025), 128667]. Lastly, we show that the analogue of the first part holds replacing ν with ‖ ⋅ ‖ φ , where φ is a lower semicontinuous submeasure.

Journal of Mathematical Analysis and ApplicationsVol. 552(1)
University of Insubria (IT)
Zero hunger
Openalex Percentile: Top 83%
Rings, Modules, and Algebras
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On maldistributed sequences and meager ideals — Paolo Leonetti · Journal of Mathematical Analysis and Applications (2025) | TGRS Research Map | TGRS