Mohammad Reza Sorouhesh - Department of Mathematics, University of Islamic Azad University, South Tehran Branch Tehran, Iran
Colin M. Campbell - School of Mathematics and Statistics, University of St Andrews, North Haugh, St Andrews, Fife KY۱۶ ۹SS, Scotland, UK

Constructing concrete examples of certain semigroups could help in implementing algorithms optimized for the users. We give concrete examples of certain finitely presented semigroups, namely S_{p,n}. Both computational and theoretical approaches are used for studying their structural properties to show that they are quasi-commutative and inverse semigroups.

Quasi-commutative semigroups, Inverse semigroups