摘要
本文给出了两个序半群直积的主左理想Ｌ（ｓ，ｔ）等于Ｌ（ｓ）×Ｌ（ｔ）；Ｌ－类Ｌ（ｓ，ｔ）等于Ｌｓ×Ｌｔ的充要条件。
In this paper,a necessary and sufficient condition that the left princial;ideal of direct product of two ordered semigroups is egual to the direct product of two left princial ideals respectively is given.
出处
《五邑大学学报（自然科学版）》
CAS
1998年第1期41-45,共5页
Journal of Wuyi University(Natural Science Edition)
关键词
序半群
直积
主左理想
半群
direct product of ordered semigroups
left principal ideal
L-class.
