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Computing the Minimal Eigenvalue of a Symmetric Toeplitz Matrix

机译:计算对称Toeplitz矩阵的最小特征值

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摘要

In [1] G. Cybenko and C. Van Loan proposed a method to compute the minimal eigenvalue of a positive definite symmetric Toeplitz matrix which is a combination of a bisection method and Newton's method for the secular equation. Interpreting the secular equation as exact condensation and replacing Newton's method by a root finding method based on a rational model of the secular equation the method of Cybenko and Van Loan is improved considerably. For test problems of dimensions up to 1024 the effort is reduced to approximately 35%.
机译:在[1]中,G。Cybenko和C. Van Loan提出了一种计算正定对称Toeplitz矩阵的最小特征值的方法,该方法将对分方法和牛顿方法结合在一起用于长期方程。将世俗方程解释为精确的缩合,并用基于世俗方程的有理模型的寻根方法代替牛顿法,从而大大改善了Cybenko和Van Loan的方法。对于尺寸最大为1024的测试问题,工作量减少到大约35%。

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