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| n×n非负整数矩阵的极大子群（英文） | |
| 作者姓名： | 杨琳 任苗苗 |
| 作者单位： | 1. Lanzhou University of Technology,School of Science;2. Northwest University,School of Mathematics |
| 基金项目： | Supported by National Natural Science Foundation of China(11861045,11701449)； |
| 摘 要： | In this paper we study the subgroup structure of the semigroup Mn(Z+) of all n × n nonnegative integral matrices under multiplication. We prove that every maximal subgroup of Mn(Z+) containing an idempotent element of rank r is isormorphic to Sr. |
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