On Weighted Subdirect Sum of Nekrasov Matrices

Abstract

This paper establishes several simple sufficient conditions under which the weighted subdirect sum of two Nekrasov matrices is also in this class. The theoretical results are supported by numerical examples that demonstrate the validity and applicability of the proposed conditions.

Keywords

Subdirect sum / Weighted subdirect sum / Nekrasov matrices / Strictly diagonally dominant (SDD) matrices / 15A06 / 15A42 / 15B48

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Funding

National Natural Science Foundation of China(12201215)

RIGHTS & PERMISSIONS

Shanghai University