Remark on quasi-ideals of ordered semigroups
arXiv:1407.7483
Abstract
The aim is to correct part of the Remark 3 of my paper "On regular, intra-regular ordered semigroups" in Pure Math. Appl. (PU.M.A.) 4, no. 4 (1993), 447--461. On this occasion, some further results and the similarity between the -semigroups and the -semigroups is discussed.