交换群

When G is not a commutative semitopological semigroup, Lau and Takahashi proved the ergodic theorem for right reversible semigroups of nonexpansive mappings by using the methods of invariant means.

而当G非交换时，Lau和Takahashi利用不变平均技巧，在假定G是右可逆，X具一致Frechet可微范数及RUC存在不变平均等条件下，给出了非扩张半群的遍历压缩定理。

Describes the key exchange algorithm based on the discrete logarithm problem of elliptic curve over Galois Field.

根据已有的理论结果，本文提出并实现了群上密钥交换安全公钥参数的三类生成算法。

This paper investigates the performance of soft handoff in WCDMA network with the retrial group of finite capacity and geometric loss.

研究了WCDMA网中带有有限容量和以几何分布丢失的重试群时的软交换性能。

In noncommutative scalar field theories, the appearing of nonplanar diagrams is related to permutation symmetry of field functions in the interaction Lagrangian, while in NCQED we can not arbitrarily change the positions of field functions in the interaction Lagrangian because different positions of the field functions correspond to different representations of the gauge group.

这里需要特别指出的是NCQED的非平面图产生的原因与非对易标量场根本不同，非对易标量场非平面图的产生是和相互作用拉氏量密度中场函数间位置的置换对称性有关，而在NCQED中我们不能随便交换相互作用拉氏量密度中场函数的位置，因为场函数的不同位置对应着规范群的不同表示。

Let G be semisimple matrix group with Lie algebra g, T a fixed maximal abelian subalgebra of g, T the orthogonal complement of T with respect to the Killing form of g, and a, b 6 T a fixed regular elements.

设G为半单矩阵群，g为其Lie代数，T(来源：ABC论文91网www.abclunwen.com)为g的极大交换子代数，T~⊥为T关于g的Killing型的正交补，a，b∈T为固定正则元。

We study noncommutitive harmonic analysis on semigroups in first part.

第一部分我们研究半群上的非交换调和分析。

The symmetry group is the permutation group acting to exchange particles of the same type.

对称组是置换群代理交换颗粒同一类型。

The basic concept of the proposed scheme is to find the union sets of the output ports of switches in the paths between the source processing node and each destination processing node in the multicast group.

我们所提出机制的基本观念是找出介於来源结点与在多点传播群组结点中，所经过交换器的输出埠联集集合。

IStockphoto, which grew out of a free image-sharing exchange used by a group of graphic designers, had undercut Harmel by more than 99 percent.

iStockphoto 最初是一群图片设计师用来免费共享和交换图片的地方，它开出的价格是马克的百分之一都不到。

IStockphoto, which grew out of a free image-sharing exchange used by a group of graphic designers, had undercut Harmel by more than 99 percent.

iStockphoto 最初是一群图片设计师用来免费共享和交换图片的地方，后来开始收费。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。