Author: Urs Format: MarkdownItexadded pointer to:
* [[Garth Warner]]: *Positivity*, University of Washington [[pdf](https://sites.math.washington.edu//~warner/Positivity_Warner.pdf)]
<a href="https://ncatlab.org/nlab/revision/diff/quantum+channel/118">diff</a>, <a href="https://ncatlab.org/nlab/revision/quantum+channel/118">v118</a>, <a href="https://ncatlab.org/nlab/show/quantum+channel">current</a>
added pointer to:
Garth Warner: Positivity, University of Washington [pdf]