Semigroups in which ... and ... coincide for regular elements.
Semigroups in which each -class contains at most one regular ...-class.
Semigroups in which prime ideals are maximal.
Semigroups in Which some Ideal is a Completely Simple Semigroup
Semigroups of cosets of semigroups: variations on a Dubreil theme.
Semigroups of ...-density continuous functions.
Semigroups of finite matrices.
Semigroups of mappings on graphs.
Semigroups of order 8.
Semigroups of order preserving mappings on a finite chain: a new class of divisors.
Semigroups of order-decreasing transformations: the isomorphism theorem.
Semigroups of order-preserving partial endomorphisms on trees, I
Semigroups of rank 1 (in Russian).
Semigroups of right quotients of a semigroup which is a semilattice of groups.
Semigroups of Semi-copulas and Evolution of Dependence at Increase of Age.
Semigroups of transformations restricted by an equivalence
Suppose σ is an equivalence on a set X and let E(X, σ) denote the semigroup (under composition) of all α: X → X such that σ ⊆ α ∘ α −1. Here we characterise Green’s relations and ideals in E(X, σ). This is analogous to recent work by Sullivan on K(V, W), the semigroup (under composition) of all linear transformations β of a vector space V such that W ⊆ ker β, where W is a fixed subspace of V.
Semigroups on -spaces
Semigroups satisfying permutation identities.
Semigroups satisfying variable identities.
Semigroups satisfying xy = yg (x,y)x.