# 严格对角占优矩阵与Nekrasov矩阵的子直和Subdirect Sums of Strictly Diagonally Dominant Matrices and Nekrasov Matrices

Abstract: A sufficient condition ensuring that the subdirect sum of strictly diagonally dominant matrix and Nekrasov matrix is in the class of Nekrasov matrices is given. And the conclusion is illustrated by a numerical example.

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