A Spectral Characterization of $\mathcal{AN}$ Operators
Functional Analysis
2016-07-13 v2
Abstract
We establish a spectral characterization theorem for the operators on complex Hilbert spaces of arbitrary dimensions that attain their norm on every closed subspace. The class of these operators is not closed under addition. Nevertheless, we prove that the intersection of these operators with the positive operators forms a proper cone in the real Banach space of hermitian operators.
Cite
@article{arxiv.1501.05869,
title = {A Spectral Characterization of $\mathcal{AN}$ Operators},
author = {Satish K. Pandey and Vern I. Paulsen},
journal= {arXiv preprint arXiv:1501.05869},
year = {2016}
}
Comments
21 pages