Seminars and Colloquia by Series

Introduction to Nonnegative Rank II

Series
Convex Algebraic Geometry Reading Seminar
Time
Friday, January 23, 2015 - 11:00 for 1 hour (actually 50 minutes)
Location
Skiles 006
Speaker
Greg Blekherman – Georgia Tech
I will continue introduction to Nonnegative and PSD ranks of matrices. I will explain the connection between these ranks and constructing linear and semidefinite lifts of polytopes. I will give several different interpretations of these ranks and continue discussing some of their elementary properties.

First Meeting

Series
Convex Algebraic Geometry Reading Seminar
Time
Friday, January 16, 2015 - 11:00 for 1 hour (actually 50 minutes)
Location
Skiles 006
Speaker
Greg Blekherman – Georgia Tech
The topic this semester will be Nonnegative and PSD Ranks of matrices. We will begin by discussing the article "Lifts of Convex Sets and Cone Factorizations" by Gouveia, Parrilo and Thomas, which makes the connection between factoring slack matrices of polytopes and finding computationally efficient representations of polytopes.