文章针对特征矩阵施行初等变换，提出了求出矩阵特征值和特征向量的一种方法，从而以简捷的方式将矩阵相似对角化。

The model of the defect of 1-D photonic crystal, which is defect in symmetry, is set up based on the solution of eigen matrix.

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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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本文讨论了一类由五个特征值和相应特征向量构造实对称五对角矩阵的特征值反问题。

In this paper, a kind of inverse eigenvalue problem which is the reconstruction of real symmetric five-diagonal matrix by five eigenvalues and corresponding eigenvectors is proposed.

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