Boundary representations of operator spaces, and compact rectangular matrix convex sets
Operator Algebras
2020-09-23 v2 Functional Analysis
Abstract
We initiate the study of matrix convexity for operator spaces. We define the notion of compact rectangular matrix convex set, and prove the natural analogs of the Krein-Milman and the bipolar theorems in this context. We deduce a canonical correspondence between compact rectangular matrix convex sets and operator spaces. We also introduce the notion of boundary representation for an operator space, and prove the natural analog of Arveson's conjecture: every operator space is completely normed by its boundary representations. This yields a canonical construction of the triple envelope of an operator space.
Cite
@article{arxiv.1610.05828,
title = {Boundary representations of operator spaces, and compact rectangular matrix convex sets},
author = {Adam H. Fuller and Michael Hartz and Martino Lupini},
journal= {arXiv preprint arXiv:1610.05828},
year = {2020}
}
Comments
21 pages