English

Matrix range characterizations of operator system properties

Functional Analysis 2021-06-09 v2

Abstract

For finite-dimensional operator systems ST\mathcal{S}_{\mathsf T}, TB(H)d{\mathsf T} \in B({\mathcal H})^d, we show that the local lifting property and 11-exactness of ST\mathcal{S}_{\mathsf T} may be characterized by measurements of the disparity between the matrix range W(T)\mathcal{W}({\mathsf T}) and the minimal/maximal matrix convex sets over its individual levels. We then examine these concepts from the point of view of free spectrahedra, direct sums of operator systems, and products of matrix convex sets.

Keywords

Cite

@article{arxiv.1912.06279,
  title  = {Matrix range characterizations of operator system properties},
  author = {Benjamin Passer and Vern I. Paulsen},
  journal= {arXiv preprint arXiv:1912.06279},
  year   = {2021}
}

Comments

20 pages. Version 2 has minor edits and a few more references. To appear in Journal of Operator Theory

R2 v1 2026-06-23T12:44:44.329Z