Embedding semigroups into semigroups with countability index two.
Endomorphism monoids of free acts and 0-wreath products of monoids III.
Endomorphism monoids of free acts and 0-wreath products of monoids, I. Annihilator properties.
Endomorphism monoids of free acts and 0-wreath products of monoids, II. Regularity.
Endomorphisms of complete Heyting algebras.
Erratum to “On homological classification of pomonoids by regular weak injectivity properties of S-posets”
The original version of the article was published in Central European Journal of Mathematics, 2007, 5(1), 181–200, DOI: 10.2478/s11533-006-0036-3. Unfortunately, the original version of this article contains a mistake: in Theorem 5.2 only conditions (i) and (ii) (and not (iii)) are equivalent. We correct the theorem and its proof.
Extension of additive functionals and semicharacters on commutative semigroups.
Extension of Characters on *-Semigroups.
Extensions normales de demi-groupes inverses
Faithful linear representations of bands.
Finite Abelian semigroups represented into the power set of finite groups
Finite communative semigroups having Frobenius semigroup algebras.
Finite commutative monoids of open maps
Finite monoids having isotypical regular representations.
Finitely generated weakly reductive commutative semigroups.
Finite-to-finite universal varieties of distributive double -algebras
Fundamental order relations on inverse semigroups and on their generalizations.
Generators in the category of S-posets
The paper contains characterizations of generators and cyclic projective generators in the category of ordered right acts over an ordered monoid.
Green's relations on the strong endomorphism monoid of a graph.
Homeomorphisms of products of Boolean separable spaces