Kubiak, Tomasz; Sostak, Alexander P.(Universitat Politècnica de València, 2004-10-01)
[EN] A fuzzy category is a certain superstructure over an ordinary category in which ”potential” objects and ”potential” morphisms could be such to a certain degree. The aim of this paper is to introduce a fuzzy category ...
Gutiérrez García, Javier; Kubiak, Tomasz(Universitat Politècnica de València, 2007-10-01)
[EN] All the higher separation axioms in topology, except for complete regularity, are known to have sandwich-type characterizations. This note provides a characterization of complete regularity in terms of inserting a ...