O rozklade pologrupy zvyškov (mod ) na direktný súčin
Objets simpliciaux
On (0,1)-matrix semigroups.
On a problem of walks
In 1995, F. Jaeger and M.-C. Heydemann began to work on a conjecture on binary operations which are related to homomorphisms of De Bruijn digraphs. For this, they have considered the class of digraphs such that for any integer , has exactly walks of length , where is the order of . Recently, C. Delorme has obtained some results on the original conjecture. The aim of this paper is to recall the conjecture and to report where all the authors arrived.
On a simple one-element extension of left zero semigroups
On a sublattice- of the lattice of congruences on a 0-regular semigroup.
On almost semigroups
On basis of identities of Brandt semigroups.
On certain finitely based varieties of semigroups.
On determinacies of monoids.
On epics and dominions of bands.
On extensions of partial -operators
On Free Commutative Groupoids
On free commutative groupoids.
On lattice ordered periodic semigroups
On ideals and subgroups of a semigroup
On middle units in orthodox semigroups.
On minimal ideals in semigroups with respect to their subsets. II.
On Reconstruction of Monoids from Their Table Fragments.
On Regular Anti-congruence in Anti-ordered Semigroups