\(F\)-regular semigroups. (Q1883001)

A regular semigroup \(S\) is called \(F\)-regular if there exists a group congruence \(\rho\) on \(S\) such that every \(\rho\)-class contains a greatest element with respect to the natural partial order on \(S\). Continuing many investigations of \(F\)-regular semigroups, the authors characterize them and give a new representation of such semigroups by means of so called Szendrei triples. In particular, \(F\)-inverse semigroups (introduced by V. V. Wagner) are characterized.