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On the completeness of the semihypergroups associated to binary relations. (English) Zbl 1151.20054

Summary: We determine the complete hypergroupoids, semihypergroups or hypergroups determined by binary relations (more exactly, by monounary multialgebras) and we study some closure properties of their classes with respect to the products of some categories where they are contained.

MSC:

20N20 Hypergroups
08A05 Structure theory of algebraic structures
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