Quantitative spectral perturbation theory for compact operators on a Hilbert space
Spectral Theory
2020-05-29 v1 Functional Analysis
Abstract
We introduce compactness classes of Hilbert space operators by grouping together all operators for which the associated singular values decay at a certain speed and establish upper bounds for the norm of the resolvent of operators belonging to a particular compactness class. As a consequence we obtain explicitly computable upper bounds for the Hausdorff distance of the spectra of two operators belonging to the same compactness class in terms of the distance of the two operators in operator norm.
Cite
@article{arxiv.2005.13891,
title = {Quantitative spectral perturbation theory for compact operators on a Hilbert space},
author = {Ayse Guven and Oscar F. Bandtlow},
journal= {arXiv preprint arXiv:2005.13891},
year = {2020}
}
Comments
26 pages