##### Department of Mathematics,

University of California San Diego

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### Math 243, functional analysis seminar

## Dr. Travis Russell

#### Dartmouth College

## Operator systems generated by projections

##### Abstract:

We construct a family of operator systems and k-AOU spaces generated by a finite number of projections satisfying a set of linear relations. This family is universal in the sense that the map sending the generating projections to any other set of projections that satisfy the same relations is completely positive. These operator systems are constructed as inductive limits of explicitly defined operator systems. By choosing the linear relations to be the non-signaling relations from quantum correlation theory, we obtain a hierarchy of ordered vector spaces dual to the hierarchy of quantum correlation sets. By considering another set of relations, we also find a new necessary condition for the existence of a SIC-POVM.

Hosts: David Jekel and Priyanga Ganesan

### March 21, 2023

### 11:00 AM

Zoom (email djekel@ucsd.edu for Zoom info)

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