Commun. Korean Math. Soc. 1998 Vol. 13, No. 1, 1-6
Sang Keun Lee, Jae Hong Jung Gyeongsang National University, Gyeongsang National University
Abstract : The paper refers to ordered semigroups in which $x^2(x \in S)$ are left ideal elements. We mainly show that this $po-$semigroup is left regular if and only if $S$ is a union of left simple subsemigroups of $S.$
Keywords : $poe-$semigroup, $po-$semigroup, left ideal, left regular, semiprime, left simple, right congruence
