arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.01188math.NAcs.NA
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非结构和结构矩阵参数秩一扰动特征值的整体性质

Global properties of eigenvalues of parametric rank one perturbations for unstructured and structured matrices

A. C. M. Ran, Michal Wojtylak

摘要:

考虑了单位圆上$A+τuv^*$作为$τ\in\Comp$或$τ\in\Real$或$τ=\e^{\iiθ}$的函数的特征值的一般性质。特别地,讨论了特征值的整体解析公式的存在性问题。此外,还详细讨论了用$τ\to\infty$求特征值的极限.考虑了以下几类矩阵:复矩阵(无附加结构)、实矩阵(无附加结构)、复$H$ -自伴矩阵和实$J$ -哈密尔顿矩阵.

英文摘要:

General properties of eigenvalues of $A+τuv^*$ as functions of $τ\in\Comp$ or $τ\in\Real$ or $τ=\e^{\iiθ}$ on the unit circle are considered. In particular, the problem of existence of global analytic formulas for eigenvalues is addressed. Furthermore, the limits of eigenvalues with $τ\to\infty$ are discussed in detail. The following classes of matrices are considered: complex (without additional structure), real (without additional structure), complex $H$-selfadjoint and real $J$-Hamiltonian.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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