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On the extensions, refinements and modifications of relators. (English) Zbl 1042.08001

Summary: By establishing some intimate connections between unary operations and set-valued functions on relators (families of relations), we greatly extend and supplement some of the former results of Á. Száz and J. Mala on the various refinements and modifications of relators.

MSC:

08A02 Relational systems, laws of composition
54E15 Uniform structures and generalizations
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