Maya Escudero, David; García Arellano, Fortunata Yolanda
(Mathematica Slovaca, 2022-10-01)
The symbol Fn(X) denotes the hyperspace of all nonempty subsets of a Hausdorff space X having at most n points. This hyperspace is endowed with the Vietoris topology. For a mapping between Hausdorff spaces f : X → Y , ...