Thomas Quinn-Gregson

activity

20172019

collaborators

4 papers

math.RA2019

Homogeneous completely simple semigroups

Thomas Quinn-Gregson

A semigroup is completely simple if it has no proper ideals and contains a primitive idempotent. We say that a completely simple semigroup $S$ is a homogeneous completely simple se…

math.LO2018

$ℵ_{0}$ -categoricity of semigroups II

T. Quinn-Gregson

A countable semigroup is $ℵ_{0}$ -categorical if it can be characterised, up to isomorphism, by its first-order properties. In this paper we continue our investigation into the $…

math.LO2018

$ℵ_{0}$ -categoricity of semigroups

Victoria Gould, Thomas Quinn-Gregson

In this paper we initiate the study of $ℵ_{0}$ -categorical semigroups, where a countable semigroup $S$ is $ℵ_{0}$ -categorical if, for any natural number $n$ , the action of it…

math.RA2017

Homogeneity of Inverse Semigroups

Thomas Quinn-Gregson

An inverse semigroup $S$ is a semigroup in which every element has a unique inverse in the sense of semigroup theory, that is, if $a \in S$ then there exists a unique $b \in S$ such…

Homogeneous completely simple semigroups

ℵ0​-categoricity of semigroups II

ℵ0​-categoricity of semigroups

Homogeneity of Inverse Semigroups

$ℵ_{0}$ -categoricity of semigroups II

$ℵ_{0}$ -categoricity of semigroups