中文

一类具有正定舒尔补的非厄米矩阵

泛函分析 2018-10-04 v2

摘要

给定正定矩阵 ACn×nA\in \mathbb{C}^{n\times n} 与厄米矩阵 DCm×mD\in \mathbb{C}^{m\times m},我们刻画了在何种条件下存在严格压缩矩阵 KCn×mK\in \mathbb{C}^{n\times m},使得非厄米分块矩阵 [AAKKAD] \left[ \begin{array}{cc} A & -AK \\ K^*A & D \end{array} \right] 关于其子矩阵~AA 具有正定舒尔补。此外,我们证明可选取~KK 以保证该分块矩阵的可对角化性,并计算其谱。进而,我们展示了其与近期发展的 Krein 空间框架理论之间的联系。

关键词

引用

@article{arxiv.1807.08591,
  title  = {On a class of non-Hermitian matrices with positive definite Schur complements},
  author = {Thomas Berger and Juan Ignacio Giribet and Francisco Martínez Pería and Carsten Trunk},
  journal= {arXiv preprint arXiv:1807.08591},
  year   = {2018}
}

备注

15 pages, this is a corrected and enhanced version of the originally submitted manuscript