Scholarlink

<p>In this paper, we propose several sufficient conditions to guarantee that the <i>k</i>-subdirect sum of two nearly strictly diagonally dominant (Nearly-SDD) matrices remains in the class of Nearly-SDD matrices. These conditions depend exclusively on the entries of the given matrices, thus providing straightforward and easily verifiable criteria for practical applications. Moreover, numerical examples are included to illustrate the validity and applicability of the obtained results.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Subdirect sums of Nearly-SDD matrices

  • 期刊论文

  • 发表日期：

    2026年3月19日

查看全文
  • Yu Wang,
  • Jingjing Ding,
  • Yanpei Wang,
  • Niannian Zhou

摘要

In this paper, we propose several sufficient conditions to guarantee that the k-subdirect sum of two nearly strictly diagonally dominant (Nearly-SDD) matrices remains in the class of Nearly-SDD matrices. These conditions depend exclusively on the entries of the given matrices, thus providing straightforward and easily verifiable criteria for practical applications. Moreover, numerical examples are included to illustrate the validity and applicability of the obtained results.