1 code implementation • 4 Apr 2017 • James East, Maximilien Gadouleau, James D. Mitchell
The semigroup $\langle D\rangle$ is generated by the idempotent transformations $(a\to b)$ for all arcs $(a, b)$ of $D$.
Combinatorics 20M20
1 code implementation • 25 Feb 2015 • James East, Attila Egri-Nagy, Andrew R. Francis, James D. Mitchell
Diagram semigroups are interesting algebraic and combinatorial objects, several types of them originating from questions in computer science and in physics.
Group Theory 20M20
1 code implementation • 2 Mar 2014 • James East, Attila Egri-Nagy, James D. Mitchell
As a particular application we use our algorithms to enumerate all transformation semigroups up to degree 4.
Group Theory 20M20
