Automatic semigroup

In mathematics, an automatic semigroup is a finitely generated semigroup equipped with several regular languages over an alphabet representing a…

Papers overview

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2018

This paper studies congruences on a *-bisimple type A I-semigroup in the light of known results in the areas of inverse…

2016

A semigroup $T$ is called Taimanov if $T$ contains two distinct elements $0,\infty$ such that $xy=\infty$ for any distinct points…

2013

We investigate a class of bivariate coagulation-fragmentation equations. These equations describe the evolution of a system of…

2012

We compute K-theory for semigroup C*-algebras. First, we prove a general theorem which covers a large class of cancellative…

2007

A semigroup variety is a Rees-Sushkevich variety if it is contained in a periodic variety generated by 0-simple semigroups. The…

2006

We study necessary and sufficient conditions for an accretive operator which satisfies the range condition to have a zero. We…

1999

Let Dn be the pseudovariety of all nite semigroups in which products of length n are right zeros and let D= ⋃ n≥1Dn. It is shown…

1998

1993

This paper sets out a theoretical framework for approximating the attractor A of a semigroup S(t) deened on a Banach space X by a…

1977

This note gives an example of a topological cancellative abelian metrizable semigroup without any translation invariant metric…