-classes in the direct product of two semigroups
-Prime Subsets in Semigroups
A band generated by two semilattices is regular.
A characterization of a class of semigroups.
A characterization of ...-classes of semigroups as partial groupoids.
A characterization of dual semigroups without nilpotent ideals.
A characterization of left cancellative monoids by flatness properties.
A characterization of regular le-semigroups.
A characterization of semigroups which are semilattices of groups
A characterization of semilattices of left groups
A characterization of semilattices of left or right groups
A characterization of the group congruences on a semigroup.
A characterization of varieties of inverse semigroups.
A class of maximal inverse subsemigroups of TX.
A class of rectangular bands of inverse semigroups.
A class of regular *-semigroups.
A class of semigroups embeddable in groups.
A class of semigroups having almost trivial multiplications.
A class of uniform bands.
A comparison of some generalizations of Green's relations.