Previous Conferences & Workshops

Dec
11
2018

Variational Methods in Geometry Seminar

Harmonic maps into singular spaces
3:30pm|Simonyi Hall 101

In the 90's, Gromov and Schoen introduced the theory of harmonic maps into singular spaces, in particular Euclidean buildings, in order to understand p-adic superrigidity. The study was quickly generalized in a number of directions by a number of...

Dec
11
2018

Symplectic Dynamics Working Group

Hamiltonian pseudo-rotations of projective spaces.
1:30pm|Simonyi Hall Classroom 114

I will talk about Ginzburg and Gurel's work on Hamiltonian pseudo-rotations of projective spaces, in particular, their proof of no fixed point of a pseudo-rotation of projective space is isolated as an invariant set.

Dec
11
2018

Variational Methods in Geometry Seminar

Density and equidistribution of minimal hypersurfaces
1:00pm|Simonyi Hall 101

I will outline the proof of density of minimal hypersurfaces (Irie-Marques-Neves) and equidistribution of minimal hypersurfaces (Marques-Neves-Song).

Dec
11
2018

Computer Science/Discrete Mathematics Seminar II

An invitation to tensor networks
Michael Walter
10:30am|Simonyi Hall 101

Tensor networks describe high-dimensional tensors as the contraction of a network (or graph) of low-dimensional tensors. Many interesting tensor can be succinctly represented in this fashion -- from many-body ground states in quantum physics to the...

Dec
10
2018

Symplectic Dynamics/Geometry Seminar

Upper bounds on the Lagrangian spectral norm
3:30pm|Simonyi Hall 101

We discuss recent developments in establishing uniform bounds on the spectral norm and related invariants in the absolute and relative settings. In particular, we describe new progress on a conjecture of Viterbo asserting such bounds for exact...

Dec
10
2018

Members’ Seminar

Schubert polynomials via triangulations of flow polytopes
2:00pm|Simonyi Hall 101

The flow polytope associated to an acyclic graph is the set of all nonnegative flows on the edges of the graph with a fixed netflow at each vertex. We will discuss a family of subdivisions of flow polytopes and explain how they give rise to a family...

Dec
10
2018

Theoretical Machine Learning Seminar

On Expressiveness and Optimization in Deep Learning
12:15pm|White Levy Room

Understanding deep learning calls for addressing three fundamental questions: expressiveness, optimization and generalization. Expressiveness refers to the ability of compactly sized deep neural networks to represent functions capable of solving...

Dec
10
2018

Computer Science/Discrete Mathematics Seminar I

A matrix expander Chernoff bound
Ankit Garg
11:15am|Simonyi Hall 101

Chernoff-type bounds study concentration of sums of independent random variables and are extremely useful in various settings. In many settings, the random variables may not be completely independent but only have limited independence. One such...

Dec
06
2018

Joint IAS/Princeton University Number Theory Seminar

Slopes in eigenvarieties for definite unitary groups
Lynnelle Ye
4:30pm|Simonyi Hall 101

The study of eigenvarieties began with Coleman and Mazur, who constructed the first eigencurve, a rigid analytic space parametrizing $p$-adic modular Hecke eigenforms. Since then various authors have constructed eigenvarieties for automorphic forms...