Summary

Let $T : \Omega \rightarrow \mathbb{C}^{n \times n}$ be a matrix-valued function that is analytic on some simply-connected domain $\Omega \subset \mathbb{C}$. We call a point $\lambda \in \Omega$ an eigenvalue if the matrix $T(\lambda)$ is singular. Nonlinear eigenvalue problems arise in many applications, often from applying transform methods to analyze differential and difference equations. We describe new localization results for nonlinear eigenvalues that generalize Gershgorin’s theorem, pseudospectral inclusion theorems, the Bauer-Fike theorem, and others.

Papers

A. Hood and D. Bindel, “Pseudospectral bounds on transient growth for higher order and constant delay differential equations,” Nov. 2016. Submitted to SIAM Journal on Matrix Analysis and Applictions.
@techreport{2016-transient-tr,
  author = {Hood, Amanda and Bindel, David},
  title = {Pseudospectral bounds on transient growth for higher order and constant delay differential equations},
  month = nov,
  year = {2016},
  arxiv = {1611.05130},
  link = {http://arxiv.org/pdf/1611.05130},
  status = {unrefereed},
  submit = {Submitted to SIAM Journal on Matrix Analysis and Applictions.}
}
D. Bindel and A. Hood, “Localization Theorems for Nonlinear Eigenvalues,” SIAM Review, vol. 57, no. 4, pp. 585–607, Dec. 2015.
SIGEST feature article.
@article{2015-sirev,
  author = {Bindel, David and Hood, Amanda},
  title = {Localization Theorems for Nonlinear Eigenvalues},
  journal = {SIAM Review},
  publisher = {SIAM},
  volume = {57},
  number = {4},
  pages = {585--607},
  month = dec,
  year = {2015},
  notable = {SIGEST feature article.},
  doi = {10.1137/15M1026511}
}

Abstract:

Let $T : \Omega \rightarrow {\Bbb C}^{n\times n}$ be a matrix-valued function that is analytic on some simply-connected domain $\Omega \subset {\Bbb C}$. A point $\lambda \in \Omega$ is an eigenvalue if the matrix $T(\lambda)$ is singular. In this paper, we describe new localization results for nonlinear eigenvalue problems that generalize Gershgorin’s theorem, pseudospectral inclusion theorems, and the Bauer-Fike theorem. We use our results to analyze three nonlinear eigenvalue problems: an example from delay differential equations, a problem due to Hadeler, and a quantum resonance computation.

D. Bindel and A. Hood, “Localization Theorems for Nonlinear Eigenvalues,” SIAM Journal on Matrix Analysis, vol. 34, no. 4, pp. 1728–1749, 2013.
2015 SIAG/LA award (best journal paper in applied LA in three years).
@article{2013-simax,
  author = {Bindel, David and Hood, Amanda},
  title = {Localization Theorems for Nonlinear Eigenvalues},
  journal = {SIAM Journal on Matrix Analysis},
  volume = {34},
  number = {4},
  pages = {1728--1749},
  year = {2013},
  doi = {10.1137/130913651},
  arxiv = {http://arxiv.org/abs/1303.4668},
  notable = {2015 SIAG/LA award (best journal paper in applied LA in three years).}
}

Abstract:

Let $T : \Omega \rightarrow {\Bbb C}^{n \times n}$ be a matrix-valued function that is analytic on some simply-connected domain $\Omega \subset {\Bbb C}$. A point $\lambda \in \Omega$ is an eigenvalue if the matrix $T(\lambda)$ is singular. In this paper, we describe new localization results for nonlinear eigenvalue problems that generalize Gershgorin’s theorem, pseudospectral inclusion theorems, and the Bauer-Fike theorem. We use our results to analyze three nonlinear eigenvalue problems: an example from delay differential equations, a problem due to Hadeler, and a quantum resonance computation.

Talks

Nonlinear Eigenvalue Localization for Damping Bounds

SIAM Computational Science and Engineering 2019, Spokane
nep eigenbounds • minisymposium external invited

Dynamics via Nonlinear Pseudospectra

Foundations of Computational Math 2017
nep eigenbounds • minisymposium external invited

Nonlinear Eigenvalue Problems: Theory and Applications

University of Arizona Math Colloquium
nep eigenbounds • colloquium external invited

Nonlinear Eigenvalue Problems: Theory and Applications

Cornell Applied Math Colloquium
nep eigenbounds • colloquium local

Localizing Nonlinear Eigenvalue Problems: Theory and Applications

SIAM LA 2015 (Prize Lecture)
nep eigenbounds • meeting external invited plenary

Eigenvalue Localization and Applications

NEP14 Workshop
eigenbounds nep • meeting external invited

Some perturbation theorems for nonlinear eigenvalue problems

Workshop on Dissipative Spectral Theory, Cardiff
eigenbounds matscat nep pml resonance • meeting external invited

Numerical Analysis of Resonances

Weyl at 100 Workshop (Fields Institute)
eigenbounds matscat nep pml resonance • meeting external invited

Analyzing Resonances via Nonlinear Eigenvalues

ICIAM
eigenbounds matscat nep resonance • minisymposium external invited

Resonances: Interpretation, Computation, and Perturbation

Cornell SCAN Seminar
eigenbounds matscat nep resonance • seminar local

Resonances: Interpretation, Computation, and Perturbation

Workshop in honor of Pete Stewart at UT Austin
eigenbounds matscat nep resonance • meeting external invited

Applications and Analysis of Nonlinear Eigenvalue Problems

Simon Fraser University NA Seminar
eigenbounds matscat nep resonance pml • seminar external invited

Resonances and Nonlinear Eigenvalue Problems

NYCAM
eigenbounds matscat nep resonance • meeting external

Numerical Analysis for Nonlinear Eigenvalue Problems

Cornell SCAN Seminar
eigenbounds matscat nep pml resonance • seminar local

Bounds and Error Estimates for Resonance Problems

SIAM Annual Meeting
eigenbounds matscat nep pml resonance • minisymposium external invited

Numerical Methods for Resonance Calculations

MSRI Workshop on Resonances
eigenbounds matscat nep resonance • meeting external invited

Bounds and Error Estimates for Nonlinear Eigenvalue Problems

Berkeley Applied Math Seminar
eigenbounds matscat nep pml resonance • seminar external invited

Error Bounds and Error Estimates for Nonlinear Eigenvalue Problems

Householder Symposium
eigenbounds nep • minisymposium external invited

Spectral Inclusion Regions for Bifurcation Analysis

NYU NA Seminar
eigenbounds • seminar local

Spectral Inclusion Regions for Bifurcation Analysis

Stanford NA Seminar
eigenbounds • seminar external invited

Inclusion Regions for Bifurcation Analysis

UC Berkeley LAPACK Seminar
cis eigenbounds • seminar local