... 正定第二变分 positive definite second variation 正定对称矩阵 positive definite symmetric matrices 正定二次型 positive definite quadratic form ...
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进而将积分方程形式的特征值问题转化为无穷阶正定对称矩阵的标准特征值问题。
And then the eigenvalue problem of integral equation is transformed into the standard eigenvalue problem of a positive definite matrix with infinite order.
本文考虑当系数矩阵为正定对称矩阵，H阵及L阵情况下TOR型方法的收敛性。
We consider the convergence of TOR-Type method under the conditions when the coefficient matrices are positive definite symmetric matrices, H-mat - rices, L-matrices.
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。
The stiffness matrix corrected by the method not only satisfies the characteristic equation, but also is the unique symmetric positive semidefinite matrix.
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