Eine Bemerkung zur eindeutigen Primfaktorenzerlegung in Halbgruppen.
Elasticity in certain block monoids via the Euclidean table
Embedding in globals of finite semilattices
Embedding in globals of groups and semilattices.
Epimorphisms, dominions and varieties of semigroups.
Equations on the semidirect product of a finite semilattice by a finite commutative monoid.
Erweiterungen linearer involutorischer Halbgruppen