... positive definite differential form 正定微分形式 positive definite quadratic form 正定二次型 ; 二次型 negative definite quadratic form 负定二次形式 ; 负定二次型 ...
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semi-positive definite quadratic form 半正定二次型
basic positive definite quadratic form 基本正定二次型
The paper gives a number of methods for differentiating half positive definite quadratic form and some relevant properties in respect to half positive definite corresponding coefficient matrix.
本文给出的半正定二次型的若干判别方法及半正定对应系数矩阵的一些相关性质。
The author introduce the method of applying positive semi-definite quadratic form to prove inequality by giving several examples.
通过给出几个实例，介绍了利用二次型的半正定性证明不等式的方法。
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