- cancellative semigroup
- полугруппа с сокращением
English-Russian scientific dictionary. 2008.
cancellative semigroup
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Semigroup — This article is about the algebraic structure. For applications to differential equations, see C0 semigroup. In mathematics, a semigroup is an algebraic structure consisting of a set together with an associative binary operation. A semigroup… … Wikipedia
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Algebraic structure — In algebra, a branch of pure mathematics, an algebraic structure consists of one or more sets closed under one or more operations, satisfying some axioms. Abstract algebra is primarily the study of algebraic structures and their properties. The… … Wikipedia
Inverse element — In abstract algebra, the idea of an inverse element generalises the concept of a negation, in relation to addition, and a reciprocal, in relation to multiplication. The intuition is of an element that can undo the effect of combination with… … Wikipedia
Demi-groupe — Ne doit pas être confondu avec semi groupe. En mathématiques, un demi groupe est une structure algébrique consistant en un ensemble muni d une loi de composition interne associative. Par définition il s agit donc d un magma associatif. Il… … Wikipédia en Français
