English

Eigenvalue location of certain matrix polynomials

Spectral Theory 2023-02-15 v1

Abstract

It is known that a matrix polynomial with unitary matrix coefficients has its eigenvalues in the annular region 12<λ<2\frac{1}{2} < |\lambda| < 2. We prove in this short note that under certain assumptions, matrix polynomials with either doubly stochastic matrix coefficients or Schur stable matrix coefficients also have eigenvalues in similar annular regions.

Keywords

Cite

@article{arxiv.2302.06788,
  title  = {Eigenvalue location of certain matrix polynomials},
  author = {Pallavi B and Shrinath Hadimani and Sachindranath Jayaraman},
  journal= {arXiv preprint arXiv:2302.06788},
  year   = {2023}
}
R2 v1 2026-06-28T08:39:26.589Z