order simple group

Secondly the relations among l-Archimedean ordered semigroups, semiprimary, primary and simple ordered semigroups are descibed.

研究l-Archimedean序半群的性质及与半准素半群,准素半群,单序半群之间的关系。

A semigroup s which is the semilattice of B-simple ordered semigroups is characterized.

给出了序半群是B-单序半群的半格的刻画。