| 幺半群的投射类刻画 |
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| 引用本文： | 闫统江. 幺半群的投射类刻画[J]. 中国石油大学学报(自然科学版), 2002, 26(5) |
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| 作者姓名： | 闫统江 |
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| 作者单位： | 石油大学(华东)应用数学系,山东东营,257061 |
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| 摘 要： | 将拟投射S 系的概念依次推广为满投射、核投射和支投射等S 系 ,给出了投射类的概念和几个具体实例 ,并讨论了几类幺半群的投射类刻画。
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| 关 键 词： | 幺半群 投射类 完全左投射幺半群 遗传幺半群 |
Characterization of monoids with their projectivity |
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| YAN Tong jiang. Characterization of monoids with their projectivity[J]. Journal of China University of Petroleum (Edition of Natural Sciences), 2002, 26(5) |
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| Authors: | YAN Tong jiang |
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| Affiliation: | YAN Tong jiang. Department of Applied Mathematics in the University of Petroleum,China,Dongying 257061 |
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| Abstract: | The idea to the category of S act on the monoid with zero was introduced. The projectivity was defined, and several examples of it were given. Several monoids were characterized with their projectivities in the category of S act. |
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| Keywords: | monoid projectivity completely projective monoid hereditary |
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