Banak, Taras; Guran, Igor; Ravsky, Alex(Universitat Politècnica de València, 2011-04-01)
[EN] We prove that a Hausdorff paratopological group G is meager if andonly if there are a nowhere dense subset A G and a countable setC G such that CA = G = AC.
Bardyla, Serhii; Ravsky, Alex(Universitat Politècnica de València, 2020-10-01)
[EN] We investigate closed subsets (subsemigroups, resp.) of compact-like topological spaces (semigroups, resp.). We show that each Hausdorff topological space is a closed subspace of some Hausdorff ω-bounded pracompact ...