·2,447,543篇论文数据，部分数据来源于NoteExpress
模型表明，有效权限集合与多重权限合并运算具有半群结构。
The model shows that the available permission set together with multi-permission combination operator is a hemigroup.
考虑群的数量关系对有限群结构的影响是有限群论中一个重要课题。
It is an important subject to study the influence on the structure of finite groups by their quantitative relationship.
群论研究的一个重要问题是对有限群的p—幂零性对有限群结构的影响。
Burnside asserts, if any sylow p-subgroup P of a finite G lies in the center of its normalizer, then G isp-nilpotent.
应用推荐