Previous Conferences & Workshops

Nov
12
2019

Theoretical Machine Learning Seminar

Fast IRLS Algorithms for p-norm regression
Sushant Sachdeva
12:00pm|White-Levy

Linear regression in L_p-norm is a canonical optimization problem that arises in several applications, including sparse recovery, semi-supervised learning, and signal processing. Standard linear regression corresponds to p=2, and p=1 or infinity is...

Nov
11
2019

Analysis Seminar

An application of displacement convexity at the level of point processes
Thomas Leblé
5:00pm|Simonyi Hall 101

The path between two measures in the sense of optimal transport yields the notion of *displacement interpolation*. As observed by R. McCann, certain functionals that are not convex in the usual sense are nonetheless *displacement convex*. Following...

Nov
11
2019

Symplectic Dynamics/Geometry Seminar

Local rigidity and C^0 symplectic and contact topology
Mike Usher
3:30pm|Simonyi Hall 101

I will explain how coisotropic submanifolds of symplectic manifolds can be distinguished among all submanifolds by a criterion ("local rigidity") related to the Hofer energy necessary to disjoin open sets from them. This criterion is invariant under...

Nov
11
2019

Members’ Seminar

Lie algebras and homotopy theory
Jacob Lurie
2:00pm|Simonyi Hall 101

In this talk, I'll discuss the role that Lie algebras play in algebraic topology and motivate the development of a "homotopy coherent" version of the theory. I'll also explain an "equation-free" formulation of the classical theory of Lie algebras...