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

Małgorzata Filipczak; Grażyna Horbaczewska

Published: 2020-07-09

Vol. 34 No. 1 (2020)

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

Małgorzata Filipczak , Grażyna Horbaczewska

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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Filipczak, M., & Horbaczewska, G. (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

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Vol. 34 No. 1 (2020)
Published: 2020-07-20

ISSN: 0860-2107

eISSN: 2391-4238

10.1515/amsil

Publisher

University of Silesia Press

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