scientific article; zbMATH DE number 3601819

zbMath0387.20058MaRDI QIDQ4169069

N. E. Podran, A. E. Evseev

Publication date: 1977

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zbMATH Keywords

partial operationgroupoids of partial transformations

Mathematics Subject Classification ID

Semigroups of transformations, relations, partitions, etc. (20M20) Other generalizations of groups (20N99)

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