Min-plus methods in eigenvalue perturbation theory and generalised Lidskii-Vishik-Ljusternik theorem
Spectral Theory
2007-05-23 v3
Abstract
We extend the perturbation theory of Vishik, Ljusternik and Lidskii for eigenvalues of matrices, using methods of min-plus algebra. We show that the asymptotics of the eigenvalues of a perturbed matrix is governed by certain discrete optimisation problems, from which we derive new perturbation formulae, extending the classical ones and solving cases which where singular in previous approaches. Our results include general weak majorisation inequalities, relating leading exponents of eigenvalues of perturbed matrices and min-plus analogues of eigenvalues.
Keywords
Cite
@article{arxiv.math/0402090,
title = {Min-plus methods in eigenvalue perturbation theory and generalised Lidskii-Vishik-Ljusternik theorem},
author = {Marianne Akian and Ravindra Bapat and Stephane Gaubert},
journal= {arXiv preprint arXiv:math/0402090},
year = {2007}
}
Comments
38 pages, 7 postscript figures, LaTeX2e v1, 5 Feb 04. v2, 20 Jan 05: final example added, more informative title and introduction. v3, 14 Feb 06: references added