7 lines
363 B
Plaintext
7 lines
363 B
Plaintext
In mathematics, a semigroup is an algebraic structure consisting of a set
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together with an associative binary operation. A semigroup generalizes a
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monoid in that there might not exist an identity element. It also
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(originally) generalized a group (a monoid with all inverses) to a type
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where every element did not have to have an inverse, thus the name
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semigroup.
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