The concept of ρG-strong semilattice of semigroups is introduced. By using this concept, we study Green’s relation H on a completely regular semigroup S. Nece
We elaborate on a method of G. Michler [6] to construct finite groups with a prescribed involution centralizer H using compatible pairs and amalgamation of H an
This paper is a continuation of our previous work [10]. By GAERS-1,we denote the class of generalized abelian exchange rings with stable range 1.In this paper,w
In 1976 Howie proved that a finite congruence-free semigroup is a simple group if it has at least three elements but no zero elementInfinite congruence-free sem
Let M be a right R-module, M the class of all M-small modules,and P a projective cover of M in σ[M]. We consider the torsion theories TM =(TM,FM), TV = (TV,FV)