Exponential varieties

Series: 
Algebra Seminar
Monday, November 9, 2015 - 15:05
1 hour (actually 50 minutes)
Location: 
Skiles 005 or 006
,  
MIT
Organizer: 
Exponential varieties arise from exponential families in statistics. These real algebraic varieties have strong positivity and convexity properties, generalizing those of toric varieties and their moment maps. Another special class, including Gaussian graphical models, are varieties of inverses of symmetric matrices satisfying linear constraints. We develop a general theory of exponential varieties, with focus on those defined by hyperbolic polynomials. Joint work with Mateusz MichaƂek, Bernd Sturmfels, and Piotr Zwiernik.