正定矩阵

In Turbo C development environment and achieve symmetric matrix input, and to determine whether the positive.

在Turbo C环境下开发，实现对称矩阵的输入，并判定是否为正定。

Because the coefficient matrix of system equation with mixed method is indefinitive, an iterative solution method of the system equation is given out.

由于后者系数矩阵非正定，为使方程唯一可解，要求压力插值函数的阶必须低于固体相位移插值函数的阶，对此提出了一种系统方程的迭代求解方法。

Mixed finite element equation with u〓-u〓-p variables has indefinitive coefficient matrix and therefore can not be solved using direct methods and traditional iterative methods.

基于〓变量的混合有限元法，系统方程的系数矩阵非正定，不能用直接法和传统的迭代法求解。

By singular value decomposition of the separating matrix, we present a novel independent-component-analysis -based contrast function for BSS, which is a generalization of the existing determined and overdetermined ones.

首先从分离矩阵的奇异值分解出发，提出一种新的基于独立分量分析的盲信号分离对比函数，它是现有的正定和超定盲信号分离对比函数的推广。

Numerical algebra ; matrix ; equation ; symmetric positive semidefinite solution

数值代数；矩阵；方程；对称半正定解

Another way infixing R2 into the M-V model results in violating the restriction of the M-V models, which the covariance matrix must be positive definite matrix, and then leads the performance of the portfolio to be worse eventually.

而另一种方式权重配置方式，将R2嵌入M-V模型方式所得出的结果，则违反了M-V模型的限制条件之一，即所变化后的共变异矩阵违反了正定的限制，最后使得投组的绩效变差。

This paper suggest a method to minimize σ and σσ[V-1] under the constraint of pole assignment, where P is the selution to'P+P=-2In, and V is the eigenvector matrix of A+BF.

摘要本文讨论在极点配置的约束下，使σ和σ·σ[V-1]极小化的问题，其中P是'P+P=-21n的正定解，V是A+BF的特征向量矩阵。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷