Categorical aspects of congruence distributivity

Hoefnagel, Michael; Rodelo, Diana

http://hdl.handle.net/10400.1/28938

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Autores

Hoefnagel, Michael

Rodelo, Diana

Resumo(s)

Abstract. We study a categorical condition on relations, which is a categorical formulation of Jónsson’s characterisation of congruence distributive varieties. Categories satisfying these conditions need not be varieties; for instance, the dual of the categories of topological spaces, ordered sets, G-sets, and the dual of any (pre)topos all provide us with examples.