摘要
从不同的角度给出了(有限)半群成群的几个充要条件.
In this paper, we give several necessary and sufficient conditions such thata semig- roup becomes a group from different point of view.
出处
《云南师范大学学报(自然科学版)》
2012年第2期39-41,共3页
Journal of Yunnan Normal University:Natural Sciences Edition
关键词
半群
群
semigroups
groups