Prime elements in the semigroup of finite types of partially ordered sets in cardinal multiplication
Principal continuum congruences, regular ...-classes and local subsemigroups.
Principal ideals in the semigroup of binary relations on a finite set: What happens when one element is added to the set.
Product of idempotents in finite full transformation semigroups.
Products of four idempotents in finite full transformation semigroups.
Products of Idempotent Endomorphisms of Free Acts of Infinite Rank.
Products OF IDEMPOTENT ORDER-PRESERVING TRANSFORMATIONS OF ARBITRARY CHAINS.
Properties of a pair of functions which generate a dense subsemigroup of S(X).
Quasi-affine algebraic monoids.
Quasiregular semigroups.
Range sets and partition sets in connection with congruences and algebraic invariants.
Ranks of binary relations.
Rational tree morphisms and transducer integer sequences: definition and examples.
Reconstructing some idempotent-generated semigroups from their biordered sets.
Reductive groups and regular semigroups.
Regular ....-classes of semigroups of continua.
Regular, inverse, and completely regular centralizers of permutations
For an arbitrary permutation in the semigroup of full transformations on a set with elements, the regular elements of the centralizer of in are characterized and criteria are given for to be a regular semigroup, an inverse semigroup, and a completely regular semigroup.
Regular monoids generated by two Galois connections.
Regularity and complete distributivity.
Regularity and Green's relations on a semigroup of transformations with restricted range.