求一类稀疏对称矩阵的特征根

Derivation of Characteristic Roots of a Class Sparse Symmetric Matrix

用降阶方法求出了一类稀疏对称矩阵的特征根及特征向量，与ＱＲ方法，直接使用Ｊａｃｏｂｉ方法相比较节省了相当大的计算量。

This paper has derived characteristic roots of a class sparse symmetric matrix from using decreasing order method. As compared with Q R method and direct Jacobi method, this derivation requires less amount of computation and gives more accurate results.