- rectangular semigroup
- мат. прямоугольная полугруппа
Большой англо-русский и русско-английский словарь. 2001.
rectangular semigroup
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Nowhere commutative semigroup — In mathematics, a nowhere commutative semigroup is a semigroup S such that, for all a and b in S, if ab = ba then a = b.[1] A semigroup S is nowhere commutative if and only if any two elements of S are inverses of each other.[1] Characterization… … Wikipedia
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