Previous Conferences & Workshops

Oct
30
2009

Joint IAS/Princeton University Number Theory Seminar

Modularity Lifting for n-Dimensional Ordinary Galois Representations
David Geraghty
4:00pm|Fine Hall -- 322

I will discuss a generalization of the modularity lifting theorems of Clozel, Harris and Taylor to the case of ordinary Galois representations. The result is obtained by applying the Taylor-Wiles method (with innovations due to Kisin and Taylor)...

Oct
29
2009

Joint IAS/Princeton University Number Theory Seminar

Generalizations of the Sato-Tate Conjecture
David Geraghty
4:30pm|Fine Hall -- 214

I will discuss a recent joint work with Thomas Barnet-Lamb and Toby Gee in which we prove the Sato-Tate conjecture for non-CM regular algebraic cuspidal automorphic representations of GL_2 over a totally real field.

Oct
29
2009

Analytic and Geometric Number Theory Seminar

Global Divisibility of Heegner points and Tamagawa Numbers
Dimitar Jetchev
2:00pm|S-101

We improve Kolyvagin's upper bound on the order of the p-primary part of the Shafarevich-Tate group of an elliptic curve of rank one over a quadratic imaginary field. In many cases, our bound is precisely the one predicted by the Birch and...

Oct
26
2009

Members’ Seminar

The Algebra and Combinatorics of Box Splines
2:00pm|S-101

What do the following seven things have in common: * zero-dimensional homogeneous polynomial ideals, * multivariate polynomial interpolation, * box splines, * hyperplane arrangements, * parking functions on graphs, * f-vectors of matroids, * integer...

Oct
22
2009

Analytic and Geometric Number Theory Seminar

Towards Schmidt's Theorem for Algebraic Points of Bounded Degree
2:00pm|S-101

The Schmidt subspace theorem is a deep generalization of Roth's theorem in Diophantine approximation to the setting of hyperplanes in projective space. Another well-known generalization of Roth's theorem is the theorem of Wirsing, which extends Roth...

Oct
21
2009

Analytic and Geometric Number Theory Mini-Course

Mean-Values of Multiplicative Functions and Weak Subconvexity
2:00pm|S-101

I will discuss several results on mean-values of multiplicative functions, notably Halasz's method for estimating such averages. In the second lecture I will show how this circle of ideas can be used to derive "weak subconvexity" bounds for L...

Oct
20
2009

Computer Science/Discrete Mathematics Seminar II

Hardness of Projection Games
10:30am|S-101

The PCP Theorem shows that any mathematical proof can be efficiently converted into a form that can be checked probabilistically by making only *two* queries to the proof, and performing a "projection test" on the answers. This means that the answer...