Semigroups for which every totally irreducible -system is injective
Simplicity of wreath product of semigroups with fixed passive semigroup.
Simultaneous representations in discrete structures
Skew-monoidal structures on simple rings with several objects.
Some algebraic applications of graded categorical group theory.
Some closure properties in monoids.
Some observations on left absolutely flat monoids.
Some Remarks or v-Ideal Systems and Categories of semigroups
Stability and flatness in acts over monoids
Our aim in this paper is to study the concept of stability for acts over monoids and in the process develop connections with flatness properties of acts and with some of the current techniques and construction used in the homological classification of monoids. We also present new proofs of some results relating to torsion free acts over monoids and to the embeddability of semigroup amalgams.
Strong shift equivalence in semigroups