Lifting theorems for completely positive maps
Abstract
We prove lifting theorems for completely positive maps going out of exact -algebras, where we remain in control of which ideals are mapped into which. A consequence is, that if is a second countable topological space, and are separable, nuclear -algebras over , and the action of on is continuous, then naturally. As an application, we show that a separable, nuclear, strongly purely infinite -algebra absorbs a strongly self-absorbing -algebra if and only if and are -equivalent for every two-sided, closed ideal in . In particular, if is separable, nuclear, and strongly purely infinite, then if and only if every two-sided, closed ideal in is -equivalent to zero.
Keywords
Cite
@article{arxiv.1508.00389,
title = {Lifting theorems for completely positive maps},
author = {James Gabe},
journal= {arXiv preprint arXiv:1508.00389},
year = {2022}
}
Comments
27 pages. V4: Accepted version (to appear in J. Noncommut. Geom.). V3: Major revision has been made, as a result upon which the earlier versions were based, has been found to contain an error. This has not affected the main results. Certain other parts have been significantly changed to improve readability. Also, new applications have been included