Anti-isomorphisms of completely 0-simple semigroups
C. H. Houghton · Proceedings of the Royal Society of Edinburgh Section A Mathematics · 1979
Synopsis Conditions for the existence of anti-isomorphisms and anti-automorphisms of completely 0-simple semigroups are derived and a method is given for the enumeration of finite 0-simple and simple semigroups up to isomorphism and anti-isomorphism.