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- With the theory of quadratic form, this essay gives out another way to solve the extremum problems of multi-variable functions. 摘要文章以二次型理论为依据，提出了解决多元函数极值问题的另一种方法。
- Geometric Methods in the Algebraic Theory of Quadratic Forms 二次型代数理论中的几何方法
- Special Groups Boolean-Theoretic Methods in the Theory of Quadratic Forms 特殊群:二次型理论中的布尔理论方法
- theory of quadratic forms 二次型论
- The absolute stability of a class of indirect control systems by applying the theory of Hermitian quadratic form and Jordan normal form was studied. 利用厄米特二次型和若当标准形理论研究了一般间接控制系统的绝对稳定性问题，给出了绝对稳定性的代数形式的判别准则。
- The system can calculate saddlepoint approximations for distributions of quadratic forms in normal variables. 采用统一的方式记录系统运行错误。
- Abstract: The absolute stability of a class of indirect control systems by applying the theory of Hermitian quadratic form and Jordan normal form was studied. 文摘:利用厄米特二次型和若当标准形理论研究了一般间接控制系统的绝对稳定性问题，给出了绝对稳定性的代数形式的判别准则。
- In the second chapter, we present the basic theory of quadratic programming including conception, optimizational condition and dual problem. 第二章介绍了二次规划的基础知识和基本理论，包括基本概念、最优性条件、对偶问题等；
- In this paper the author discusses the multiplicity of quadratic forms over fields of characteristic 2 and gives the complete results for both local and globel fields of characteristic 2. 作者讨论了特征2的域上的二次型的可乘性，并且给出了判别特征为2的局部域和整体域上的二次型可乘的充分必要条件。
- Barkirov introduced majorization in the research of quadratic form of random variables and got the result as following: If , be independent normal random variables , two positive vectors , then . Bakirov首次将控制序概念引入到高斯向量二次型分布的不等式研究，并且证明了下述结论：令 为相互独立的标准正态变量， 和 为两个正的实向量。
- Einstein put forward his new theory of relativity. 爱因斯坦提出了相对论的新学说。
- Einstein's theory of relativity. 爱因斯坦的相对论。
- metric normal form of quadratic form 二次形式的度量标准形式
- Do you agree to the wave theory of light? 你同意光的波动理论吗？
- He cavalierly dismisses the theory of both Freud and Jung. 他傲慢武断地斥贬佛洛依德和杨格二人的理论。
- Darwin put forth the theory of evolution,. 达尔文提出了进化论。
- Application of Quadratic Form Theory in Solving the Maximum and Minimum of Multivariate Quadratic Function 二次型理论在求解多元二次函数最值方面上的应用
- The theory of form is basic for furniture design. 形态学是家具造型设计的基础理论之一。
- Not everyone can understand Einstein's Theory of Relativity. 不是每个人都能读懂爱因斯坦的相对论的。
- Darwin spend more than twenty year work on his theory of evolution. 达尔文花了二十余年时间研究他的进化论。
