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- 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。
- 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。
- 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。
- 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。
- 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。
- Pele was in a class of his own as a footballer. 贝利是举世无双的足球健将。
- metric normal form of quadratic form 二次形式的度量标准形式
- He took the ninth position in his class of forty. 他在40 个人的班级里排在第九名。
- Geometric Methods in the Algebraic Theory of Quadratic Forms 二次型代数理论中的几何方法
- A class of verbs having similar inflected forms. 变形相似的一类动词
- Global Phase Portraits for a Class of Quadratic System 一类二次系统的全局相图
- It's no easy task to take control of a class of young children. 管住一个班的小孩子可不是件容易的事。
- Phase portrait of a class of quadratic differential system 一类二次微分系统的相图
- Qualitative analysis of a class of quadratic differential system 一类二次微分系统的定性分析
- This creature can be subsumed in the class of reptiles. 这种生物可以归入爬行动物一类。
- Linearizable Conditions of a Class of Quadratic System 一类二次系统可线性化的条件
- 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
- Inequality of quadratic form of three variables concerning two triangles 一个涉及两个三角形的三元二次型不等式
- To this class of substances belong glass and wood. 属于这类物质的有玻璃、木材等。
