Strict radicals of monoids.
Strong P-congruences on P-regular semigroups.
Strong shift equivalence in semigroups
Structure and ideal theory of commutative semigroups
Structure and ideal theory of duo semigroups.
Structure des demi-groupes dont le treillis des sous-demi-groupes est semi-modulaire
Structure des demi-groupes dont le treillis des sous-demi-groupes satisfait à certaines conditions
Structure of partially ordered cyclic semigroups
This paper recalls some properties of a cyclic semigroup and examines cyclic subsemigroups in a finite ordered semigroup. We prove that a partially ordered cyclic semigroup has a spiral structure which leads to a separation of three classes of such semigroups. The cardinality of the order relation is also estimated. Some results concern semigroups with a lattice order.
Structure of regular semigroups I: fundamental regular semigroups.
Structure of regular semigroups II: the general case.
Structure of regular semigroups with a quasi-ideal inverse transversal.
Structure theorems for regular semigroups.
Structure theorems on certain regular and inverse semigroups
Structures naturelles des demi-groupes et des anneaux réguliers ou involutés
Certaines relations binaires sont définies sur les demi-groupes et les demi-groupes à involution. On examine comment elles peuvent en ordonner les éléments: notamment les idempotents, les éléments réguliers au sens de von Neumann, ceux qui possédent un inverse ponctuel ou de Moore-Penrose ; et en fonction aussi de conditions sur l'involution. Ces relations peuvent alors coïncider avec les ordres naturels des idempotents et des demi-groupes inverses, avec les ordres de Drazin et de Hartwig : elles...
Sturdy bands of semigroups.
In this paper we consider band compositions determined by two transitive systems of monomorphisms, called the sturdy bands of semigroups.
Subdirect decompositions of finite commutative semigroups.
Subdirect decompositions of finitely generated commutative semigroups.
Subdirect products of a band and a semigroup.
Subdirect products of regular seimgroups.
Subdirectly irreducible completely symmetrical semigroups.