Kumar, Mandeep; Tyagi, Brij Kishore(Universitat Politècnica de València, 2022-10-03)
[EN] For topological spaces X and Y, let Qp(X,Y) be the space of all quasicontinuous functions from X to Y with the topology of pointwise convergence. In this paper, we study the cardinal invariants such as cellularity, ...
Tkachuk, Vladimir V.(Universitat Politècnica de València, 2009-04-01)
[EN] We show, in particular, that if nw(Nt) ≤ k for any t ϵ T and C is a dense subspace of the product ǁ{Nt : t 2 T} then, for any continuous (not necessarily surjective) map ϕ : C ͢ K of C into a compact space K with ...
Alas, Ofelia T.; Tamariz-Mascarúa, Ángel(Universitat Politècnica de València, 2008-04-01)
[EN] The Cech number of a space Z, C(Z), is the pseudocharacter of Z in βZ. In this article we obtain, in ZFC and assuming SCH, some upper and lower bounds of the Cech number of spaces Cp(X) of realvalued continuous ...