Previous Conferences & Workshops

Mar
20
2012

Special Computer Science/Discrete Mathematics Lecture

Graph Convergence, Parameter Testing and Group Actions
Miklos Abert
3:15pm|S-101

I will talk about two natural notions of convergence for sequences of graphs of bounded degree and their connection to groups and group actions. The first is Benjamini-Schramm convergence, which is strongly related to parameter testing. The second...

Mar
20
2012

Analysis Seminar

Nodal Lines of Maass Forms and Critical Percolation
2:00pm|S-101

We describe some results concerning the number of connected components of nodal lines of high frequency Maass forms on the modular surface. Based on heuristics connecting these to a critical percolation model, Bogomolny and Schmit have conjectured...

Mar
20
2012

Computer Science/Discrete Mathematics Seminar II

The Quasi-Polynomial Freiman-Ruzsa Theorem of Sanders
10:30am|S-101

The polynomial Freiman-Ruzsa conjecture is one of the important open problems in additive combinatorics. In computer science, it already has several diverse applications: explicit constructions of two-source extractors; improved bounds for the log...

Mar
19
2012

Members’ Seminar

Polynomial Methods in Learning and Statistics
2:00pm|S-101

My goal in this talk is to survey some of the emerging applications of polynomial methods in both learning and in statistics. I will give two examples from my own work in which the solution to well-studied problems in learning and statistics can be...

Mar
19
2012

Computer Science/Discrete Mathematics Seminar I

Optimal Estimators for Entropy, Support Size, and Related Properties
Gregory Valiant
11:15am|S-101

In joint work with Paul Valiant, we consider the tasks of estimating a broad class of statistical properties, which includes support size, entropy, and various distance metrics between pairs of distributions. Our estimators are the first proposed...

Mar
16
2012

Special Seminar

Ramanujan Graphs and Siran Graphs, Applications to Classical and Quantum Coding Theory
Jean-Pierre Tillich
1:30pm|S-101

We explain in this talk how Ramanujan graphs can be used to devise optimal cycle codes and review how other graph families related to a construction proposed by Margulis yield interesting families of quantum codes with logarithmic minimum distance...

Mar
15
2012

Joint IAS/Princeton University Number Theory Seminar

Hypergeometric Motives
Fernando Villegas
4:30pm|West Bldg. Lecture Hall

The families of motives of the title arise from classical one-variable hypergeometric functions. This talk will focus on the calculation of their corresponding L-functions both in theory and in practice. These L-functions provide a fairly wide class...