同时还给出了它的最佳逼近问题的极小范数解。
The least-norm solution of the optimal approximation was given.
证明了最佳逼近问题存在唯一解，并给出了求最佳逼近解的算法和数值算例。
The numerical method to find the optimal approximate solution and numerical experiments are provided.
对给定的特征值和对应的特征向量，提出了对称正交对称半正定矩阵逆特征值问题及最佳逼近问题。
From given eigenvalues and eigenvectors, the inverse eigenvalue problem of symmetric ortho-symmetric positive semi-definite matrices and its optimal approximate problem were considered.
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