Studies on the Relationship of Mechanical Properties and Micro-morphology and Sub-cluster Parameters of High Toughened and Strengthened PPO/PA6 Alloy;
高强高韧PPO/PA6合金的力学性能—亚微相态—群子参数之间关系的研究
Studies on the Relationship of Combustibility and Mechanism of Combustion and Sub-cluster Parameters of Flame Retarded PET and Its Fibers;
阻燃PET及其纤维的燃烧性能—燃烧机理—群子参数之间关系的研究
In order to describe all types of viscosity-composition curves of polymer blends wihh mathematical model, sub-cluster equations were derived on the basis of "sub-cluster theory".
为用统一的数学模型对高分子合金的粘度-组成曲线进行描述,运用群子理论的基本概念,推导出了不同形式的“群子方程”。
Directed subgroup graph for studying the subgroup properties of finite groups;
利用有向子群图研究有限群的子群性质
Relation between direct sum group and subgroup of direct sum group;
直和群及其子群之间的关系
Study on structure of subgroup of direct sum group;
直和群的子群结构的研究
The Existence of Nilpotent Hall π Subgroups;
幂零Hall π-子群的存在性
Because the inverse of Lagrange theorem of finite group is not hold,it is difficult to determine all the subgroups of A_n,to determive whether An has the same order subgroups for any positive factor of the absolute value of |An|.
由于有限群的L agrange定理的逆不成立,当n较大时,要确定n次交代群An的所有子群,以及对于An的任一正因数,要确定A n是否有这个阶数的子群都要较困难的,文章通过计算5-循环置换各次方幂,再把各次方幂中的第4个数字去掉,得到4个2×2置换的乘积,从而构造出A 5的6个10阶子集,并证明了每个子集是A5的子群。
Using Lagrange s theorem and the concept of n-letters symmetric group,we have Proved the only existence 30 certainly subgroups of the 4-letters symmetric group S4, getting rid of 2 normal subgroups, it has 9 2-order cyclic subgroups , 4 3-order cyclic subgroups,3 4-order cyclic subgroups, 4 Klein 4-elements groups 4 S4 (at the time of isomorphic meaning), 3 8-elements groups and 1 A4.
使用Lagrange定理及n次对称群的基本概念证明了4次对称群存在且只存在30个子群,并给出了每个子 群。
New Two-subpopulation Particle Swarm Optimization Algorithm
一种新的双子群PSO算法
Particle Swarm Optimizer (PSO) with the idea of SSMPSO (shuffled subpopulations and mutation PSO) was improved.
提出一种子群混合与变异的微粒群算法(SSMPSO),按适应值大小将微粒均匀分为两个子群分别进行目标优化,当子群在一定进化代数内未满足收敛条件时重新混合为一个种群。
THE e-PAIRS FOR MAXIMAL SUBGROUPS AND C-NORMAL SUBGROUPS;
有限群极大子群θ-子群偶与C-正规子群
The p～＊-Nilpotency and θ-Pairs for Subgroups on Finite Groups;
有限群的p～＊-幂零性和子群的θ-子群偶
The Deskins Maximal Completions and Complemented Subgroups of Finite Groups;
有限群极大子群的Deskins完备与补子群
Non-Abelian Subgroup of Order p~3 Contained in the Frattini Subgroup of p-Groups;
p-群Frattini子群中p~3阶非交换的子群
πFrat(G) Subgroup of Periodic FC-group
周期FC-群的_πFrat(G)子群
Automorphisms of the Maximal Unipotent Subgroups of Ree Group and Suzuki Group;
Ree群、Suzuki群的极大幺幂子群的自同构
The Influence of (?)-subgroups, π-quasinormally Embedded Subgroups and (?)-subgroups on the Structure of Finite Groups;
（？）-子群，π-拟正规嵌入子群和（？）-子群对有限群结构的影响
The Influence of C-normality and θ-pairs of Subgroups on the Structure of Finite Groups;
子群的C-正规性、θ-子群偶对有限群结构的影响
Afinite group when its sylow groups s maximal subgroups are m-normal;
sylow子群的极大子群都在G内m-正规的有限群
The Influence of c~*-normal Subgroups and H-Subgroups on the Structure of Finite Groups
c~*-正规子群和H-子群对有限群结构的影响
Finite groups in whose second maximal subgroups the cyclic subgroups of order 2 are complemented
二次极大子群中的2阶子群可补的有限群
OVERGROUPS OF THE DIAGONAL SUBGROUP IN THE UPPER TRIANGULAR SUBGROUP OVER COMMUTATIVE RINGS
可换环上对角子群在上三角子群中的扩群
A Theorem On Maximal Subgroups of Sylow Subgroups;
关于Sylow子群的极大子群的一个定理
The Normalizer of Hall Subgroups and the Structure of Finite Groups
Hall-子群的正规化子与有限群结构
Study of Particle Swarm Optimizers Based on Population Entropy and Structure;
基于种群熵和种群结构的粒子群算法研究
On Groups All of Whose Proper Subgroups Have Prime Power Order
关于任一真子群为p-群的有限群的研究
An Action from Automorphism Group on Actor Group to Characteristic Group
自同构群到对特征子群的商群上一作用
On the Autmorphism Groups of Metacyclic p-group with a Cyclic Maximal Subgroup
具有循环极大子群的亚循环p-群的自同构群