中文

谱的可对角化与普适可实现性指标

谱理论 2023-10-17 v2

摘要

一个复数列表 Λ={λ1,,λn}\Lambda =\{\lambda _{1},\ldots ,\lambda _{n}\}(允许重复)若其为某个元素非负矩阵 AA 的谱,则称为 \textit{可实现的}。若实现矩阵 AA 可对角化,则 Λ\Lambda 称为 \textit{可对角化实现的}。若 Λ\Lambda Λ\Lambda 所允许的每个可能的Jordan标准型都是 \textit{可实现的},则称其为 \textit{普适可实现的}。此处,我们研究谱的可对角化可实现性与普适可实现性之间的联系。特别地,我们建立了可对角化与普适可实现性的 \textit{可实现性指标}。我们还定义了两个谱的合并,并证明了一个结果,使我们在许多情况下能轻易判定谱的普适可实现性。

关键词

引用

@article{arxiv.2301.04701,
  title  = {Indices of diagonalizable and universal realizability of spectra},
  author = {Charles R. Johnson and Ana I. Julio and Ricardo L. Soto},
  journal= {arXiv preprint arXiv:2301.04701},
  year   = {2023}
}

备注

1. Theorem 2.4: we say that we are going to prove that there is a minimum called diagonalizable realizability index, but we do not. 2. Corollary 2.1: We say that we may define a universal realizablity index, but we do not show that such index exists. Corollary 2.1 only show lower and upper bounds for that index