Nekrasov矩阵的K次直和

Pub Date : 2022-06-10 DOI:10.13001/ela.2022.6951

Zhenhua Lyu, Xueru Wang, Lishu Wen

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引用次数: 2

摘要

本文给出了Nekrasov矩阵与严格对角占优矩阵的次直和仍然是Nekrasof矩阵的一个充要条件。利用这个充要条件，我们给出了几个简单的充分条件，保证Nekrasov矩阵的次直和在同一类中。实例说明了理论结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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K-subdirect sums of Nekrasov matrices

In this paper, we give a sufficient and necessary condition for the subdirect sum of a Nekrasov matrix and a strictly diagonally dominant matrix being still a Nekrasov matrix. Adopting this sufficient and necessary condition, we present several simple sufficient conditions ensuring that the subdirect sum of Nekrasov matrices is in the same class. Examples are reported to illustrate the theoretical results.

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