Abstract
Goguen's category of V-sets whose objects are functions with values in a pre-ordered set and morphisms are suitable maps is shown to be a topological construct if and only if the pre-ordered set is a complete lattice; in particular the category Set(L) of L-sets, also considered by Goguen, is topological over Set. The special case when the considered pre-ordered set is L with the “mapping to” relation arising from a structure Φ = ( ϕ a ) a ∈ L , where every ϕ a : L → [ ⊥ , a ] preserves arbitrary infs, already considered by the authors on any complete lattice L, is investigated in detail.
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