行列式的

Function and limit, one-variable calculus and its application, ABC of progression and multiple-variable calculus, determinant, matrix and its calculation, system of linear equations and quadratic form, probability of occurrence, chance variable, law of large numbers and central limit theorem, sample and parametric estimation, variance analysis, regression analysis.

Advanced Mathematics 1 [Course Code 1040008 MAT114] 本课程主要介绍函数和极限，一元微积分和它的应用，ABC 级数和多元微积分，行列式和矩阵的应用，线性方程和二次方程式，事件的概率，偶然性变量，大数定律和中心极限定理，样本和参数估计，方差分析，回归分析。

Some necesarry and sufficient coditions for generalized diagonal dominance for matrices are discussed by using the determinant and the closed convex cone generated by matrices column vectors. This paper, thus provides some new methoods for determining the generalized diagonal dominance in matrices.

利用矩阵的列向量所生成的闭凸锥及矩阵的行列式来讨论其行广义对角占优的若干充要条件，为判别矩阵是否为广义对角占优提供若干新方法。

Considering the mechanical and electrical boundary conditions of AlN/GaN structures, determinantal equation which is used to solve the phase velocity of surface acoustic wave is given from the basic principle of matrix methods.

从矩阵方法的基本原理出发，结合AlN/GaN结构的机械和电学边界条件，推导出用于求解声表面波在AlN/GaN结构中的相速的行列式方程。

With solving the determinantal equation, SAW propagation properties in AlN/GaN structures are acquired, including the phase velocity and electromechanical coupling coefficient which is vary with frequency, film thickness and c-axis orientation.

通过求解该行列式方程，分析了声表面波在AlN/GaN结构中的传播特性，包括声表面波相速和机电耦合系数随频率、AlN的膜厚和c轴取向的变化规律。

With solving the determinantal equation, SAW propagation properties in AIN/GaN structures are acquired, including the phase velocity and electromechanical coupling coefficient which is vary with frequency, film thickness and c-axis orientation.

通过求解该行列式方程，分析了声表面波在AIN／GaN结构中的传播特性，包括声表面波相速和机电耦合系数随频率、AIN的膜厚和C轴取向的变化规律。

A determinant whose only nonzero elements occur in square blocks centered about the principal diagonal is in block- diagonal form.

仅有的非零元素集中于主对角线的方块中的行列式是分块对角形式的。

Firstly, four geometric loop equations are set up by using vector method in complex number fields. Secondly, three constraint equations are used to construct the Dixon resultants, which is a 6×6 matrix and contain two variables to be eliminated. Extract the greatest common divisor of two rows and two columns of Dixon matrix and compute its determinant to obtain a new equation. This equation together with the forth constraint equation can be used to construct a Sylvester resultant.

首先使用矢量法和复数法建立4个几何约束方程式；再使用Dixon结式法对3个方程式构造一个含有2个变元的6×6 Dixon矩阵，提取其中2行列元素的公因式，将新矩阵的行列式展开后得到二元高次多项式方程，该方程与剩下一个方程使用Sylvester结式消去一变元，得到一元高次方程。

A new method is presented for choosing reconstructed parameters.we refer to the method as Jacobian determinant method.

提出了一种新的确定重构的嵌入参数的方法：雅可比行列式方法。

If a symmetrical matrix is positive definite, the determinants of all its minors are also positive.

如果对称矩阵是为正定者，它的所有子式的行列式也都是正的。

Based on the nonlinear static equilibrium equations of the system, the force singularity is described by the determinant and condition number of the Jacobian matrix clearly.

基于系统的非线性静力平衡方程，根据力传递Jacobian矩阵的行列式和条件数，剖析了工作空间内部的力奇异性。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。