Deciding polyhedrality of spectrahedraAlgebra & Discrete Mathematics
|Speaker:||Raman Sanyal, UC Berkeley|
|Start time:||Thu, May 5 2011, 4:10PM|
Spectrahedra are to semidefinite programming what polyhedra are to linear programming. Spectrahedra form a rich class of convex bodies with many of the favorable properties of polyhedra. It is a theoretical interesting and practically relevant question to decide when a spectrahedron is a polyhedron. In this talk I will discuss an algorithm for doing that which requires a good understanding of the geometry of spectrahedra and some linear algebra. Only knowledge of the latter will be assumed.