RT - Journal Article T1 - Characterizing Ordered Bi-Ideals in Ordered Γ-Semigroups JF - IJMSI YR - 2009 JO - IJMSI VO - 4 IS - 1 UR - http://ijmsi.ir/article-1-65-en.html SP - 17 EP - 25 AB - The notion of a &Gamma-semigroup was introduced by Sen [8] in 1981. We can see that any semigroup can be considered as a &Gamma-semigroup. The aim of this article is to study the concept of (0-)minimal and max- imal ordered bi-ideals in ordered &Gamma-semigroups, and give some charac- terizations of (0-)minimal and maximal ordered bi-ideals in ordered &Gamma- semigroups analogous to the characterizations of (0-)minimal and maxi- mal ordered bi-ideals in ordered semigroups considered by Iampan [5]. LA eng UL http://ijmsi.ir/article-1-65-en.html M3 10.7508/ijmsi.2009.01.002 ER -