from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Mathematics A set for which there is a binary operation that is closed and associative.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any set for which there is a binary operation that is both closed and associative.


from Wiktionary, Creative Commons Attribution/Share-Alike License

semi- +‎ group


  • A semigroup is a set together with an associative operation, called the multiplication of the semigroup and notated xy rather than f (x, y).


  • The final equation for the evolution at the ensemble level is of the quantum dynamical semigroup type and has a structure extremely similar to the final one of the GRW theory.

    Collapse Theories

  • X, whence the semigroup of all functions on a set X forms a monoid.


  • The semigroup of all nonempty words over a given alphabet has as a subsemigroup the words of even length; however the words of odd length do not form a subsemigroup because the concatenation of two odd-length words is not of odd length.


  • A commutative semigroup is a semigroup whose operation is commutative.


  • "Non-breaking error handling is just an applicative functor on a partially applied disjoint union type constructor with semigroup error elements so what's the big deal?"

    developerFusion - content

  • These considerations illustrate how the commonly used semigroup ansatz for time evolution of the unstable systems arises.

    AvaxHome RSS:

  • Th ... abc on adelic Bost-Connes unknown: But then, we can form the crystalline semigroup graded skew-group algebra.

    Feeds4all documents in category 'SEO'


Log in or sign up to get involved in the conversation. It's quick and easy.