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necessary condition相关的网络例句

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In this project we obtain a sufficient and necessary condition for a finite group G has a p-block with a normal p-subgroup D as a defect group, a necessary and sufficient condition for a group which is an extension of a nilpotent group by an abelian group has a p-block of defect zero.

本项目中我们给出了正规p-子群是有限群G的亏群的一个充要条件和幂零群被交换群扩张的群有亏零块的充要条件。

By giving the example, explains that theorem 4 in the refuted paper is not the necessary condition of the continued fraction convergences, by discussing the indeterminacy of the lever function and citing the counterexamples, expounds that the theorem 4 is not sufficient condition of the parameters W and W -1 neutralizing each other, and so shows algorithm 1 and 2 in the refuted paper to be incorrect.

通过举例说明了"攻文"定理4不是连分式收敛项的必要条件,并通过对杠杆函数不确定性的讨论和反例的举证说明了"攻文"定理4不是W与W –1相互抵消的充分条件,从而证明了"攻文"算法1和2及其衍生方法是错误的。

Furthermore,we obtain a sufficient and necessary condition about continuity of functional series and integral with parameter,and show the sufficient condition about differential .

将数学分析中一致收敛性的概念加以推广,分别对函数项级数和含参量积分引入次一致收敛的概念,证明了函数项级数、含参量非正常积分连续性的充要条件和可微性的充分条件,推广了数学分析中的相应结

We give the sufficient-necessary condition of convergence and the sufficient condition of eventually contractive convergence introduced by Fisher is explained.

另一方面,根据线性控制理论的某些结果,提出了用系统的特征值来分析解码吸引子的收敛性的新手段;并给出了收敛的充要条件以及Fisher终值压缩收敛的充分条件。

Leading resistant factor into the necessary condition can also enlarge the quadratic convergence region near optimal solution so that it is very efficient to use the known flash calculations at one condition to iteratively compute another optimal solution at other conditions where pressure, temperature and mole fractions of components are close to known ones respectively.

在极值必要条件式中引入阻尼因子能扩大真解附近的平方收敛域,尤其在利用已知条件下的汽液平衡结果作初值直接用极值条件方程迭代计算压力、温度和组成变化不严重的相邻点的汽液平衡极值解方面效果十分显著,适合于加快组分模型的计算速度。

Cosmetology costumes are doing a necessary condition for a woman is not necessary and sufficient conditions.

服饰美容是做好一个女人的必要条件,不是充要条件。

The definitions of generalized directional derivative and generalized gradient of Lipschitz functions defined on Riemannian manifold are presented. Some properties of the directional derivative and gradient are proved by using tangent and cotangent mapping. The minimization necessary condition of nonsmooth Lipschitz functions is given. Moreover, Fritz John necessary optimality condition in mathematical programming is provided on Riemannian manifold.

在黎曼流形上给出了Lipschitz函数的广义方向导数和广义梯度的概念,利用黎曼流形局部上与欧氏空间开集微分同胚的性质以及切映射和余切映射导出了广义梯度的性质和运算法则,证明了定义在黎曼流形上的函数取得极小值的必要条件是广义梯度包含零元素,并利用这些性质给出了黎曼流形上数学规划问题的Fritz John型最优性条件。

In this paper,a necessary condition that a cut vertex belongs to every γ s set of G is discussed,and a necessary and sufficient condition of existing indepedent set dominating set in G is given.

本文讨论了割点属于G的任一最小集控制集的必要条件,并且给出了G有独立集控制集的充要条件。

If ris also irreducible in Z_nand f~n~κ≡fmodn,r(xfor all f∈Z_nthen we call n a Carmichael number of orderκmodulo r.Denote the set of all such numbers by C_κ,r(x.Define C_κ=∪_r(xC_κ,r(x,where rpasses through all monic irreducible polynomials over Z of degreeκ.We call elements of the set C_κCarmichael numbers of orderκ.ZHU and SUN[Journal of Sichuan University,42;1(2005), 47-51]first gave a necessary condition for Carmichael numbers of order 3.Then they gave a sufficient condition for Carmichael numbers of order 3,but did not find any such numbers less than 10~8 satisfying the sufficient condition.At last,they asked three questions;1.is the necessary condition also sufficient?

f∈Z_n,就称n是模r的κ阶Carmichael数,用C_κ,r(x表示所有这种数的集合,定义C_κ=∪_r(xC_κ,r(x,这里r跑遍Z中所有κ次首一不可约多项式,C_κ里面的元素就称为κ阶Carmichael数,C_κ称为κ阶Carmichael数集,朱文余和孙琦[四川大学学报,42;1(2005),47-51]首先给出了3阶Carmichael数的一个必要条件;然后又给出了这种数的一个充分条件,并发现10~8内没有满足此充分条件的这种数;最后他们提出三个问题;一、问必要条件是否也是充分的?

We first introduced a new concept called transitive resolvable idempotent symmetric quasigroup, proved that the necessary condition for the existence of TRISQ is also sufficient, then presented a tripling construction for LKTS by using TRISQ instead of TKTS, thus removed the condition "there exists a TKTS" in Denniston''s tripling construction for LKTS; We also improved J. Lei''s product construction for LKTS by removing the condition "there exists a TKTS".

我们首先引入了可迁可分解幂等对称拟群的新概念,证明了TRISQ存在的必要条件也是充分的,然后给出了用TRISQ取代可迁Kirkamns三元系的LKTS的三倍构造法,这样就去掉了在Denniston的关于LKTS的3倍构造中的条件"存在一个TKTS";我们用TRISQ取代TKTS改进了雷建国的关于LKTS的一个积构造方法,从而去掉了该构造方法中的条件"存在一个TKTS"。

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