Ideal Extensions of Ordered Semigroups
Niovi Kehayopulu, Michael Tsingelis · Communications in Algebra · 2003
The ideal extensions of semigroups -without order- have been first considered by Clifford (Clifford, A. H. (1950). Extension of semigroups. Trans. Amer. Math. Soc. 68: 165–173). The aim of this paper is to give the main theorem of the ideal extensions for ordered semigroups.