严格对角占优三对角矩阵逆元素的估计

Inverse Element Estimate in Strictly Diagonall Dominant Tridiagonal Matrix

本文给出了严格对角占优三对角矩阵逆元素的估计式,获得了比文[1]定理更好的结果。即:去掉了文[1]中非负这一限制条件,且使文[1]的定理成为本文定理之特例。

This paper gives inverse element estimate formula in strictly diagonally dominant tridiag-onal matrix. We get better consequence than that theorem in paper [l]. That is, the restrictive condition of nonnegative in paper [l] is excepted, and let theorem in paper [l] becoming an especial example in our paper that.