positive semidefinite matrix [数] 半正定矩阵 ; 非负半正定阵
positive semidefinite quadratic form [数] 半正定二次型
positive semidefinite kernel [数] 半正定核
Positive semidefinite matrices 正半定矩阵
positive semidefinite Hermite matrix 半正定Hermite矩阵
Symmetric and positive semidefinite matrix 对称且正半肯定矩阵
symmetric positive semidefinite matrix 对称正半定矩阵 ; 对称矩阵
Then A is positive semidefinite, negative definite and negative semidefinite.
一封好的商业书信应该是明确的、直截了当的。
A novel blind interference cancellation algorithm is proposed using positive semidefinite programming.
提出了一种新的采用半正定规划的盲干扰抑制算法。
The stiffness matrix corrected by the method not only satisfies the characteristic equation, but also is the unique symmetric positive semidefinite matrix.
用这个方法修正的刚度矩阵不仅满足特征方程，而且是唯一的对称半正定矩阵。
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