ON NIL-EXTENSIONS OF LEFT STRONGLY SIMPLE po-SEMIGROUPS
Qing Shun Zhu · Communications of the Korean Mathematical Society · 2011
In this paper, we first introduce the concept of left strongly simple po-semigroups, then we discuss properties and characterizations nil-extensions of left strongly simple po-semigroups and semilattices of leftstrongly simple po-semigroups. Finally, we give some characterizations of the chain of left strongly simple po-semigroups.