Márquez, Edgar(Universitat Politècnica de València, 2023-10-02)
[EN] We present a solution to the following problem: Does every countable and non-discrete topological (Abelian) group have a countable network with infinite elements? In fact, we show that no maximal topological space ...
Cao, Jiling; Greenwood, Sina(Universitat Politècnica de València, 2006-10-01)
[EN] In this paper, we consider the ideal Iσ generated by all σ-nowhere dense sets in a topological space. Properties of this ideal and its relations with the Volterra property are explored. We show that Iσ is compatible ...