Some constants related to numerical ranges
Functional Analysis
2016-01-26 v1
Abstract
In an attempt to progress towards proving the conjecture the numerical range W (A) is a 2--spectral set for the matrix A, we propose a study of various constants. We review some partial results, many problems are still open. We describe our corresponding numerical tests.
Cite
@article{arxiv.1601.06159,
title = {Some constants related to numerical ranges},
author = {Michel Crouzeix},
journal= {arXiv preprint arXiv:1601.06159},
year = {2016}
}