A characterization of the group congruences on a semigroup.
A class of quasi-adequate transformation semigroups.
A common generalization of Kelley's theorem (concerning measures on Boolean algebra) and on von Neumann's minimax theorem
A comparison of some generalizations of Green's relations.
A generalization of the Bruck-Reilly construction.
A non regular perfect semigroup.
A note on endomorphism semigroups.
A note on idempotent separating congruences on a regular semigroup
A note on the embedding of topological semigroups.
A note on the maximal semilattice of an R*NC-semigroup decomposition
A note on the strongly compatible tolerances on an arbitrary semigroup
A representation theorem for I-medial and for generalized inverse semigroups.
A SURVEY OF SEMIGROUPS OF CONTINUOUS SELFMAPS.
A uniform chain whose inverse semigroup has no chart.
Adjan's theorem and conjugacy in semigroups.
Algebraic dimension of semigroups with application to invariant measures.
Algebraic monoids with a dense group of units.
All varieties of orthogroups.
An algebraic proof of Isbell' s zigzag theorem.
An easy proof of Ponizovski's theorem.