Halbgruppen und Automaten
Half-automorphisms of transformation semigroups
Hereditary endomorphism monoids of projective acts.
Hierarchy of efficient generators of the symmetric inverse monoid.
Homogeneous spaces admitting transitive semigroups.
Homomorphisms of sandwich semigroups and sandwich near-rings.
Hyperstability of a class of linear functional equations.
Ideals are greater on the left.
Ideals in transformation semigroups
Idempotent Boolean matrices.
Idempotent-generated completely 0-simple semigroups.
Idempotent-generated subsemigroups of the symmetric semigroup of degree four: computer investigations.
Infinite injective transformations whose centralizers have simple structure
For an infinite set X, denote by Γ(X) the semigroup of all injective mappings from X to X under function composition. For α ∈ Γ(X), let C(α) = β ∈ g/g(X): αβ = βα be the centralizer of α in Γ(X). The aim of this paper is to determine those elements of Γ(X) whose centralizers have simple structure. We find α ∈ (X) such that various Green’s relations in C(α) coincide, characterize α ∈ Γ(X) such that the -classes of C(α) form a chain, and describe Green’s relations in C(α) for α with so-called finite...
Injective endomorphisms of Gx-normal semigroups: Infinite defects.
Innere Translationen der kleinen Kategorien
Invariant Subspaces and Spectral Conditions on Operator Semigroups
Inverse elements and their average number in a finite symmetric semigroup.
Isolated subsemigroups in the variants of .
Isomorphisms of semigroups of transformations.
Joint subnormality of n-tuples and C₀-semigroups of composition operators on L²-spaces
Joint subnormality of a family of composition operators on L²-space is characterized by means of positive definiteness of appropriate Radon-Nikodym derivatives. Next, simplified positive definiteness conditions guaranteeing joint subnormality of a C₀-semigroup of composition operators are supplied. Finally, the Radon-Nikodym derivatives associated to a jointly subnormal C₀-semigroup of composition operators are shown to be the Laplace transforms of probability measures (modulo a C₀-group of scalars)...