From the 1 of 4 linked papers with an AI index.
4 papers
Involutions of (twisted) diagram monoids
James East, P. A. Azeef Muhammed
The paper classifies all involutions of several well-known diagram monoids and their twisted versions, and determines which involutions give rise to star‑regular or regular star‑mo…
Maximal subgroups of free projection- and idempotent-generated semigroups with applications to partition monoids
James East, Robert D. Gray, P. A. Azeef Muhammed +1
This paper investigates the maximal subgroups of a free projection-generated regular -semigroup over a projection algebra , and their relationship to the maximal subg…
Projection algebras and free projection- and idempotent-generated regular -semigroups
James East, Robert D. Gray, P. A. Azeef Muhammed +1
The purpose of this paper is to introduce a new family of semigroups - the free projection-generated regular -semigroups - and initiate their systematic study. Such a semigroup…
Categorical representation of DRC-semigroups
James East, Matthias Fresacher, P. A. Azeef Muhammed +1
DRC-semigroups model associative systems with domain and range operations, and contain many important classes, such as inverse, restriction, Ehresmann, regular -, and -regula…