Lattice of idempotent separating congruences in a ℙ-regular semigroup
M. K. Sen, A. Seth · Bulletin of the Australian Mathematical Society · 1992
In this paper we introduce the concept of ℙ-regular, normal subset of a ℙ-regular semigroup, give an alternate characterisation of the maximum idempotent separating congruence in a ℙ-regular semigroup and finally describe the lattice of the idempotent separating congruences in a ℙ-regular semigroup.