Regular elements of the semigroup of all binary relations.
Regular generalized adjoint semigroups of a ring.
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 involution groupoids revisited.
Regular languages definable by Lindström quantifiers
In our main result, we establish a formal connection between Lindström quantifiers with respect to regular languages and the double semidirect product of finite monoids with a distinguished set of generators. We use this correspondence to characterize the expressive power of Lindström quantifiers associated with a class of regular languages.
Regular languages definable by Lindström quantifiers
In our main result, we establish a formal connection between Lindström quantifiers with respect to regular languages and the double semidirect product of finite monoids with a distinguished set of generators. We use this correspondence to characterize the expressive power of Lindström quantifiers associated with a class of regular languages.
Regular monoids generated by two Galois connections.
Regular prefix-codes and right power-bounded languages.
Regular semigroup congruences.
Regular * semigroups.
Regular semigroups with a medial idempotent.
Regular semigroups with a split map.
Regular semirings.
Regular WE-2 semigroups.
Regularity and complete distributivity.
Regularity and Green's relations on a semigroup of transformations with restricted range.
Regularity and transitivity of local-automorphism semigroups of locally finite forests
Regularity of residuated mappings.
Regularity of semigroup rings.
Regularity of the wreath product of monoids.