On Divisors of Pseudovarieties Generated by Some Classes of Full Transformation Semigroups
Vítor Hugo Fernandes · Algebra Colloquium · 2008
In this paper we present a division theorem for the pseudovariety of semigroups 𝖮𝖣 (𝖮𝖱) generated by all semigroups of order-preserving or order-reversing (orientation-preserving or orientation-reversing) full transformations on a finite chain.