... 正定阵 positive definite matrix 正定阵 positively definite matrix 加权平均数 weighted mean ...
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... 正定方阵 positively definite matrix 正齐次的 positively homogeneous 正定向曲线 positively oriented curve ...
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covariance matrix tests for equality of covariance : 等协方差的协方差阵检验 positively definite matrix : 正定矩阵 semi-definite matrix : 半定矩阵 ..
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Hermite positively definite matrix sequence Hermite正定矩阵序列
complex positively definite matrix 复正定矩阵
Positively definite matrix sequence 正定矩阵序列
generalized positively definite matrix 广义正定矩阵
generalized positively definite hermite matrix 广义正定hermite矩阵
By using the method of constructing positively definite matrix, some new results for robust stability of uncertain time_delay systems are derived, and the stability degree is also discussed.
利用构造正定矩阵的方法，给出了判别不确定时滞系统鲁棒稳定的几个新结果，同时讨论了这类系统的稳定度。
Finally a displacement generalized eigenvalue equation is obtained, in which the stiffness matrix is symmetric and positively definite.
最后得到一个矩阵型的位移广义本征值方程，刚度矩阵对称、正定。
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