mathematics, a semigroup is a nonempty set together with an associative binary operation. A special class of semigroups is a class of semigroups satisfying...

independent of time. There are numerous special classes of semigroups, semigroups with additional properties, which appear in particular applications. Some of these...

would make the semigroup uniformly continuous). Analytic semigroups, (eventually) differentiable semigroups and (eventually) compact semigroups are all eventually...

set Special classes of semigroups Composition ring Dominique Perrin; Jean Eric Pin (2004). Infinite Words: Automata, Semigroups, Logic and Games. Academic...

an element x in S such that axa = a. Regular semigroups are one of the most-studied classes of semigroups, and their structure is particularly amenable...

divisors of iterated block products of copies of the two-element semilattice. Monogenic semigroup Special classes of semigroups Kilp, Mati; Knauer, Ulrich; Mikhalev...

In mathematics, the bicyclic semigroup is an algebraic object important for the structure theory of semigroups. Although it is in fact a monoid, it is...

A numerical semigroup S is pseudo-symmetric if and only if g(S) = (F(S) + 2)/2. Frobenius number Special classes of semigroups Semigroup Sylver coinage...

inverse semigroups are a subclass of *-semigroups. It is also textbook knowledge that an inverse semigroup can be characterized as a regular semigroup in which...

regular semigroup" stems from Lyapin's book on semigroups. In the Russian literature, completely regular semigroups are often called "Clifford semigroups"....

monogenic semigroup is a semigroup generated by a single element. Monogenic semigroups are also called cyclic semigroups. The monogenic semigroup generated...

generalisations of an inverse semigroup are: (Left, right, two-sided) adequate semigroups. (Left, right, two-sided) ample semigroups. (Left, right, two-sided)...

a semigroup with two elements is a semigroup for which the cardinality of the underlying set is two. There are exactly five nonisomorphic semigroups having...

(multiplicatively) idempotent Nowhere commutative semigroup Special classes of semigroups Orthodox semigroup Reversible cellular automaton § One-dimensional...

the study of cancellative semigroups can be traced to the first substantial paper on semigroups, (Suschkewitsch 1928). Let S be a semigroup. An element...

classes of orthodox semigroups had been studied earlier. For example, semigroups that are also unions of groups, in which the sets of idempotents form subsemigroups...

with one element Semigroup with one element Semigroup with two elements Semigroup with three elements Special classes of semigroups A. H. Clifford, G...

pairs of non-commutative non-band semigroups. Special classes of semigroups Semigroup with two elements Semigroup with one element Empty semigroup Andreas...

precisely in semigroup theory, a variety of finite semigroups is a class of semigroups satisfying specific algebraic properties. Those classes can be defined...

distinct nonisomorphic semigroups with one element is one. If S = { a } is a semigroup with one element, then the Cayley table of S is The only element...

Rees matrix semigroups are a special class of semigroups introduced by David Rees in 1940. They are of fundamental importance in semigroup theory because...

In mathematics, Brandt semigroups are completely 0-simple inverse semigroups. In other words, they are semigroups without proper ideals and which are also...

regular semigroup is both catholic and orthodox if and only if the semigroup is an inverse semigroup. Special classes of semigroups Orthodox semigroup Proceedings...

addition to subsets of semigroups and partial semigroups in general. A variant of Hindman's theorem is true for arbitrary semigroups. Ergodic Ramsey theory...

elements of S are inverses of each other. Nowhere commutative semigroups can be characterized in several different ways. If S is a semigroup then the...

generalization of periodic semigroups, thus all finite semigroups are also epigroups. The class of epigroups also contains all completely regular semigroups and...

identity element being 0. Monoids are semigroups with identity. Such algebraic structures occur in several branches of mathematics. The functions from a set...

semigroups, in what is nowadays known as Rees's theorem. The matrix-based semigroups used in this characterisation are called Rees matrix semigroups....

History of the Algebraic Theory of Semigroups. American Mathematical Society. p. 334. ISBN 978-1-4704-1493-1. Grillet, Pierre A. (1995). Semigroups: An Introduction...

S2CID 116687780 Lawson, J. D. (2011), "Semigroups of Olshanski type", in Hofmann, K. H.; Lawson, J. D.; Vinberg, E. B. (eds.), Semigroups in Algebra, Geometry and Analysis...