For strictly diagonally dominant matrices, this bounds are sharper than those of [1, Lin. Alg. Appl., 287(1999), 289-305] and [2, Lin. Alg. Appl., 330 (2001), 1-14].
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- 对于严格对角占优矩阵的情形;三对角矩阵逆元素的界改进了文献[1; Lin.;Alg