Previous Conferences & Workshops

Mar
21
2016

Members’ Seminar

An introduction to the abc conjecture
Héctor Pastén Vásquez
2:00pm|S-101

In this talk I will discuss some classical and new applications of the abc conjecture, its relation to conjectures about elliptic curves, and some (admittedly weak) unconditional partial results.

Mar
21
2016

Computer Science/Discrete Mathematics Seminar I

Polynomial-time tensor decompositions via sum-of-squares
Tengyu Ma
11:15am|S-101

Tensor decompositions have been the key algorithmic components in provable learning of a wide range of hidden variable models such as topic models, Gaussian mixture models, independent component analysis, dictionary learning. Despite its success...

Mar
18
2016

Geometric Structures on 3-manifolds

Counting closed orbits of Anosov flows in free homotopy classes
2:00pm|S-101

This is joint work with Thomas Barthelme of Penn State University. There are Anosov and pseudo-Anosov flows so that some orbits are freely homotopic to infinitely many other orbits. An Anosov flow is $R$-covered if either the stable or unstable...

Mar
17
2016

Hermann Weyl Lectures

Weyl groups, and their generalizations, in enumerative geometry III
4:00pm|S-101

These lectures will be about enumerative K-theory of curves (and more general 1-dimensional sheaves) in algebraic threefolds. In the first lecture, we will set up the enumerative problem and survey what we know and what we conjecture about it. In...

Mar
16
2016

Mathematical Conversations

p-adic numbers in cryptography and data compression
6:00pm|Dilworth Room

The $p$-adic numbers are finally entering the realm of engineering. I will give several examples of how they arise in applications.

Mar
16
2016

Hermann Weyl Lectures

Weyl groups, and their generalizations, in enumerative geometry II
4:00pm

These lectures will be about enumerative K-theory of curves (and more general 1-dimensional sheaves) in algebraic threefolds. In the first lecture, we will set up the enumerative problem and survey what we know and what we conjecture about it. In...

Mar
16
2016

Analysis Seminar

Local eigenvalue statistics for random regular graphs
2:00pm|S-101

I will discuss results on local eigenvalue statistics for uniform random regular graphs. For graphs whose degrees grow slowly with the number of vertices, we prove that the local semicircle law holds at the optimal scale, and that the bulk...

Mar
15
2016

Hermann Weyl Lectures

Weyl groups, and their generalizations, in enumerative geometry I
4:00pm|S-101

These lectures will be about enumerative K-theory of curves (and more general 1-dimensional sheaves) in algebraic threefolds. In the first lecture, we will set up the enumerative problem and survey what we know and what we conjecture about it. In...

Mar
15
2016

Analysis Seminar

Topology of the set of singularities of viscosity solutions of the Hamilton-Jacobi equation
2:00pm|S-101

We will mainly report on the progress done recently the connectedness properties of the set of non-differentiable points of viscosity solutions of the Hamilton-Jacobi equation. To make the lecture accessible to people with no previous knowledge in...

Mar
15
2016

Computer Science/Discrete Mathematics Seminar II

Proof complexity - an introduction
10:30am|S-101

Proof systems pervade all areas of mathematics (often in disguise: e.g. Reidemeister moves is a sound and complete proof system for proving the equivalence of knots given by their diagrams). Proof complexity seeks to to understand the minimal...