The factorizable transformation semigroups.
The finiteness of a base of indentities for fiveelement monoids
The free completely regular semigroup on a set.
The fundamental representation of a completely regular semigroup.
The fundamental representation of a regular semigroup.
The generalized translational hull of a semigroup.
The greatest Archimedean ideal in a semigroup
The greatest idempotent separating congruence on an ....-unipotent semigroup.
The groupoid of varieties of idempotent semigroups.
The ideal structure of -semigroups
The injective hull of S-sets, S a semilattice of groups.
The intersection of free submonoids of a free monoid is free.
The inverse semigroup of partial symmetries of a convex polygon.
The kernel of a homomorphism on a finite semigroup.
The kernel of the wreath product of semigroups.
The largest proper regular ideal of
The lattice of R-unipotent congruences on a regular semigroup.
The least inverse and orthodox congruences on a completely regular semigroup.
The least semilattice of groups congruence on a regular semigroup.
The least separative congruence on a weakly commutative semigroup