Convergent subseries of s ℐ -convergent series

Autor: Jacek Tryba, Martin Sleziak, Ladislav Mišík
Rok vydání: 2021
Předmět:
Zdroj: Lithuanian Mathematical Journal. 61:56-59
ISSN: 1573-8825
0363-1672
DOI: 10.1007/s10986-020-09504-7
Popis: We say that an ideal ℐ has property (T) if for every ℐ-convergent series $$ {\sum}_{n=1}^{\infty }{x}_n, $$ there exists a set A ∈ ℐ such that Σn∈ℕ\A xn converges in the usual sense. The aim of this paper is to construct a nontrivial ideal with property (T) under the assumption that cov (ℳ) = c.
Databáze: OpenAIRE