McCluskey, A.E.Watson, Stephen2017-05-302017-05-302002-04-011576-9402https://riunet.upv.es/handle/10251/82019[EN] A topological space is TUD if the derived set of each point is the union of disjoint closed sets. We show that there is a minimal TUD space which is not just the Alexandroff topology on a linear order. Indeed the structure of the underlying partial order of a minimal TUD space can be quite complex. This contrasts sharply with the known results on minimality for weak separation axioms.Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)Minimal topologiesWeak separation axiomsArtículo2017-05-3010.4995/agt.2002.2112Abierto1989-4147