Discretization of C*-algebras
Operator Algebras
2017-02-16 v2 Functional Analysis
Abstract
We investigate how a C*-algebra could consist of functions on a noncommutative set: a discretization of a C*-algebra is a -homomorphism that factors through the canonical inclusion when restricted to a commutative C*-subalgebra. Any C*-algebra admits an injective but nonfunctorial discretization, as well as a possibly noninjective functorial discretization, where is a C*-algebra. Any subhomogenous C*-algebra admits an injective functorial discretization, where is a W*-algebra. However, any functorial discretization, where is an AW*-algebra, must trivialize for any infinite-dimensional Hilbert space .
Keywords
Cite
@article{arxiv.1607.03376,
title = {Discretization of C*-algebras},
author = {Chris Heunen and Manuel L. Reyes},
journal= {arXiv preprint arXiv:1607.03376},
year = {2017}
}
Comments
16 pages. This paper supersedes arXiv:1412.1721