Some kinds of sparseness on the real line and ideals on ω



Abstract

We show that a large class of summable ideals can be defined using a certain kind of “sparseness” of subsets of the line near zero, but it is still an open question whether this gives a characterization of the whole class.


Keywords

summable ideals; O’Malley points

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Published : 2020-07-09


FilipczakM., & HorbaczewskaG. (2020). Some kinds of sparseness on the real line and ideals on ω. Annales Mathematicae Silesianae, 34(1), 45-50. Retrieved from https://journals.us.edu.pl/index.php/AMSIL/article/view/13631

Małgorzata Filipczak 
Wydział Matematyki i Informatyki, Uniwersytet Łódzki  Poland
Grażyna Horbaczewska  grazyna.horbaczewska@wmii.uni.lodz.pl
Wydział Matematyki i Informatyki, Uniwersytet Łódzki  Poland
https://orcid.org/0000-0002-2883-0941



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