Dilations of matricies
Functional Analysis
2015-03-26 v1 Operator Algebras
Abstract
We explore aspects of dilation theory in the finite dimensional case and show that for a commuting -tuple of operators acting on some finite dimensional Hilbert space and a compact set the following are equivalent: 1. has a normal -dilation. 2. For any there exists some finite dimensional Hilbert space containing and a tuple of commuting normal operators acting on such that for all polynomials of degree at most and such that the joint spectrum of is contained in (where is the projection from to ).
Cite
@article{arxiv.1503.07334,
title = {Dilations of matricies},
author = {David Cohen},
journal= {arXiv preprint arXiv:1503.07334},
year = {2015}
}