Some Orthodox Monoids with Associate Inverse Subsemigroups
Bernd Billhardt, Emília Giraldes, M. Paula O. Marques-Smith, Paula Mendes Martins · Communications in Algebra · 2010
By an associate inverse subsemigroup of a regular semigroup S we mean a subsemigroup T of S containing a least associate of each x ∈ S, in relation to the natural partial order ≤ S in S. In this article, we investigate a class of orthodox monoids with an associate inverse subsemigroup and obtain a known description of uniquely unit regular orthodox semigroups as a corollary. Also, by considering a more general situation, we identify the homomorphic image of a kind of semidirect product of a band with identity by an inverse monoid, thus extending a known result for unit regular orthodox semigroups.