On ideal extensions of completely simple semigroups.
On ideals of a semilattice
On idempotent semifields and a paper by H. Hutchins.
On injective and flat commutative regular semigroups.
On intra-regular semigroups
On irreducible matrix semigroups.
On Kim's conjecture.
On la-semigroup defined by a commutative inverse semigroup
On lattice ordered periodic semigroups
On lattices embeddable into subsemigroup lattices. III: Nilpotent semigroups.
On left --liberal semigroups
In this paper the equivalence on a semigroup in terms of a set of idempotents in is defined. A semigroup is called a -liberal semigroup with as the set of projections and denoted by if every -class in it contains an element in . A class of -liberal semigroups is characterized and some special cases are considered.
On left canellative semigroups.
On left, right and two-sided cancellable elements of semigroups.
On linear algebraic semigroups. III.
On ideals and subgroups of a semigroup
On (m, n)-Regular Semigroups
On (m, n)-regular semigroups.
On -semigroups
On maximal ideals of compact connected topological semigroups.
On maximal submonoids of BX.