Calcul des relations inverses
Categoria degli universi di dispositivi e categoria delle -algebre
Categories of ordered sets
Categories of systems of -relations
Change of base for relational variable sets.
Classification of tensor products of symmetric graphs
In the category of symmetric graphs there are exactly five closed tensor products. If we omit the requirement of units, we obtain twelve more.
Commutative monoids all of whose principal ideals are projective.
Construction de théories d'exactitude