Proceedings of the Royal Society of Edinburgh: Section A Mathematics

Table of Contents - 2003 - Volume 133, Issue 05  

Research Article

Set products in transformation semigroups

Peter M. Higginsa1, John M. Howiea2 and Nik Ruškuca3

a1 Department of Mathematics, University of Essex, Colchester CO4 3SQ, UK (peteh@essex.ac.uk)

a2 Mathematical Institute, University of St Andrews, St Andrews, Fife KY16 9SS, UK (jmh@st-and.ac.uk;

a3 Mathematical Institute, University of St Andrews, St Andrews, Fife KY16 9SS, UK nr1@st-and.ac.uk

Abstract

We describe products of arbitrary L-, R- and H-classes with the set of idempotents of full transformation semigroups.

(Received May 13 2002)

(Accepted February 06 2003)