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半群成群的几个充要条件 被引量:3

Some necessary and sufficient conditions such that a semigroup becomes a group
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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.
作者 王守峰
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 semigroups groups
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