Abstract and concrete categories
Abstract and concrete categories
Theory of topological molecular lattices
Fuzzy Sets and Systems
Some remarks on fuzzy powerset operators
Fuzzy Sets and Systems
Fuzzy closure operators induced by similarity
Fundamenta Informaticae
Continuity in quantitative domains
Fuzzy Sets and Systems
Relational compositions in Fuzzy Class Theory
Fuzzy Sets and Systems
Implication structures, fuzzy subsets, and enriched categories
Fuzzy Sets and Systems
Fuzzy Galois connections under weak conditions
Fuzzy Sets and Systems
L-topological spaces as spaces of points
Fuzzy Sets and Systems
Fuzzy Optimization and Decision Making
Di-uniformities and Hutton uniformities
Fuzzy Sets and Systems
Q-fuzzy subsets on ordered semigroups
Fuzzy Sets and Systems
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The transport of L-sets along an L-relation R is considered, with L any residuated lattice, sometimes with further properties as to be a frame or an MV-algebra. Pairs of powerset operators related to R are considered and their basic properties are studied in a comprehensive discussion including some results already known. A few examples and suggestions for application and further development are also given.