Sandwich sets and partial order.
SAP compactifications of N-fold and infinite semidirect products.
Schützenberger Groups of ...-Classes Containing Odd Degree Polynomials.
Selfdistributive groupoids. Part D1: Left distributive semigroups
Semi-Characters of the Multiplicative Semigroup of Integers Modulo
Semigroup representations of commutative idempotent Abelian groupoids
Semigroups all but one of whose proper subsemigroups are groups.
Semigroups and rings whose proper one-sided ideals are power joined
Semigroups and the structure of categories
Semigroups and their lattice of congruences.
Semigroups and their lattice of congruences II.
Semigroups and their natural order
Semigroups and their subsemigroup lattices.
Semigroups containing maximal ideals
Semigroups containing ubiquitous elements.
Semigroups for which all homomorphic images have complemented lattices of congruences.
Semigroups for which every S-system has the natural partial order.
Semigroups for which every totally irreducible -system is injective
Semigroups in which a power of each element lies in a subgroup.
Semigroups in which prime ideals are maximal.