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Hs-semigroups
Jul 20, 2023
Anything that associates
In mathematics, a semigroup is an algebraic structure consisting of a set together with an associative binary operation. A semigroup generalizes a monoid in that there might not exist an identity element. It also originally generalized a group a monoid with all inverses to a type where every element did not have to have an inverse, thus the name semigroup.
WWW https//github.com/ekmett/semigroups
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