Previous Conferences & Workshops

Nov
19
2010

Analysis/Mathematical Physics Seminar

Perturbation Theory for Band Matrices
2:00pm|S-101

Band matrices are a class of random operators with rows and columns indexed by elements of the d-dimensional lattice, and random entries H(u, v) which are small when the distance between u and v on the lattice is larger than W. We shall discuss the...

Nov
18
2010

Joint IAS/Princeton University Number Theory Seminar

Endoscopic Transfer of Depth-Zero Suprcuspidal L-Packets
4:30pm|S-101

In a recent paper, DeBacker and Reeder have constructed a piece of the local Langlands correspondence for pure inner forms of unramified p-adic groups and have shown that the corresponding L-packets are stable. In this talk we are going to discuss...

Nov
18
2010

Galois Representations and Automorphic Forms Seminar

Potential Automorphy for Compatible Systems of l-Adic Galois Representations
David Geraghty
2:15pm|S-101

I will describe a joint work with Barnet-Lamb, Gee and Taylor where we establish a potential automorphy result for compatible systems of Galois representations over totally real and CM fields. This is deduced from a potential automorphy result for...

Nov
17
2010

Galois Representations and Automorphic Forms Seminar

A New Approach to the Local Langlands Correspondence for GL_n Over p-Adic Fields
Peter Scholze
2:15pm|S-101

We give a new local characterization of the Local Langlands Correspondence, using deformation spaces of p-divisible groups, and show its existence by a comparison with the cohomology of some Shimura varieties. This reproves results of Harris-Taylor...

Nov
16
2010

Computer Science/Discrete Mathematics Seminar II

Planar Convexity, Infinite Perfect Graphs and Lipschitz Continuity
10:30am|S-101

Infinite continuous graphs emerge naturally in the geometric analysis of closed planar sets which cannot be presented as countable union of convex sets. The classification of such graphs leads in turn to properties of large classes of real functions...

Nov
15
2010

Members’ Seminar

Configuration Spaces of Hard Discs in a Box
2:00pm|S-101

The "hard discs" model of matter has been studied intensely in statistical mechanics and theoretical chemistry for decades. From computer simulations it appears that there is a solid--liquid phase transition once the relative area of the discs is...

Nov
15
2010

Computer Science/Discrete Mathematics Seminar I

Fractional Perfect Matchings in Hypergraphs
Andrzej Rucinski
11:15am|S-101

A perfect matching in a $k$-uniform hypergraph $H= (V, E)$ on $n$ vertices is a set of $n/k$ disjoint edges of $H$, while a fractional perfect matching in $H$ is a function $w:E \to [0,1]$ such that for each $v \in V$ we have $\sum_{e \ni v}w(e) = 1...

Nov
12
2010

Analysis/Mathematical Physics Seminar

A Rigorous Renormalization Group Study of a p-Adic Quantum Field Theory
Abdelmalek Abdesselam
2:00pm|S-101

This talk will be a progress report on an ongoing research project which is joint work with Ajay Chandra and Gianluca Guadagni and which concerns a p-adic analog of the Brydges-Mitter-Scoppola phi-4 model with fractional Laplacian in 3 dimensions...

Nov
11
2010

Joint IAS/Princeton University Number Theory Seminar

Periods of Special Cycles and Derivatives of L-Series
Shou-Wu Zhang
4:30pm|Fine Hall -- 214

In this talk, I will state some conjectures and examples concerning the central derivatives of automorphic L-series in terms of heights of special cycles on Shimura varieties.