Characterizations of effective sets and nonexpansive multipliers in conditionally complete and infinitely distributive partially ordered sets.
...-classes in ....-unipotent Semigroups.
Commutative semigroups that are simple over thein endomorphism semirings
Commutative semigroups with almost transitive endomorphism semirings
Comparison of congruences on regular semigroups.
Compatible tolerances on groupoids
Complementation and inner automorphism regular semigroups.
Completely Regular and Orthodox Congruences on Regular Semigroups
Completely regular and orthodox congruences on regular semigroups.
Completely regular semigroups as semigroups of partial transformations.
Completions and injective hulls of E-reflexive inverse semigroups.
Congruences on an inverse Bruck-Reilly monoid. Part I: Non-group congruences.
Congruences on Bruck-Reilly extensions of monoids.
Congruences on conventional semigroups
*-Congruences on regular *-semigroups.
Congruences on semigroups of continuous selfmaps.
Congruences on semigroups which are perfect rectangular bands of inverse semigroups.
Congruences on simple extensions of semigroups.
Congruences on strong semilattices of regular simple semigroups.
Conjugacy in monoids.