Relations and graphs: discrete mathematics for computer scientists
Relations and graphs: discrete mathematics for computer scientists
Fuzzy Sets and Systems - Special issue on fuzzy relations, part 1
Heterogeneous relation algebra
Relational methods in computer science
An algebraic formalization of fuzzy relations
Fuzzy Sets and Systems
Representation theory of Goguen categories
Fuzzy Sets and Systems
Fuzzy Sets and Systems
Relation algebraic approaches to fuzzy relations
RAMICS'11 Proceedings of the 12th international conference on Relational and algebraic methods in computer science
Time-Dependent contact structures in goguen categories
RelMiCS'05 Proceedings of the 8th international conference on Relational Methods in Computer Science, Proceedings of the 3rd international conference on Applications of Kleene Algebra
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Goguen categories were introduced as a suitable calculus for L-fuzzy relations, i.e., for relations taking values from an arbitrary complete Brouwerian lattice L instead of the unit interval [0, 1] of the real numbers. Such a category may provide some relational constructions as products, sums or subobjects. The aim of this paper is to show that under an assumption on the lattice L one may require without loss of generality that the related relations are crisp, i.e., all entries are either the least element 0 or the greatest element 1 of L.