Previous Conferences & Workshops

Nov
22
2011

Joint IAS/Princeton University Mathematical Physics Seminar

Random Natural Frequencies, Active Dynamics and Coherence Stability in Populations of Coupled Rotators
4:30pm|S-101

The Kuramoto synchronization model is the reference model for synchronization phenomena in biology (and, to a certain extent, also in other fields). The model is formulated as a dynamical system of interacting plane rotators. Variations of it...

Nov
22
2011

Computer Science/Discrete Mathematics Seminar II

Shorter Long Code and Applications to Unique Games
10:30am|S-101

The long code is a central tool in hardness of approximation, especially in questions related to the unique games conjecture. Many hardness reductions and constructions of integrality gap instances use the long code as a core gadget. However, this...

Nov
21
2011

Members’ Seminar

Bordered Floer Homology
2:00pm|S-101

Bordered Floer homology is an invariant for three-manifolds with boundary (or, more precisely, three-manifolds with parameterized boundary), constructed using pseudo-holomorphic curve techniques. The theory associates to a marked surface a...

Nov
21
2011

Computer Science/Discrete Mathematics Seminar I

An Isoperimetric Inequality for the Hamming Cube and Integrality Gaps in Bounded-Degree Graphs
Siavosh Benabbas
11:15am|S-101

In 1970s Paul Erdos asked the following question: Consider all the boolean strings of length n. Assume that one has chosen a subset S of the strings such that no two chosen strings are different in precisely n/4 (or its closest even integer)...

Nov
18
2011

Joint IAS/Princeton University Symplectic Geometry Seminar

Morse Theory and Invariants of (almost) Symplectic Manifolds
4:30pm|Fine Hall -- Room 322

I will discuss two of my current projects which have different aims but use similar techniques. The first aims to understand the equivariant K-theory of symplectic orbifolds. The second is about the topology of toric origami manifolds. Neither space...

Nov
17
2011

Joint IAS/Princeton University Number Theory Seminar

Arithmetic Inner Product Formula
Yifeng Liu
4:30pm|S-101

I will introduce an arithmetic version of the classical Rallis' inner product formula for unitary groups, which generalizes the previous works of Kudla, Kudla-Rapoport-Yang and Bruinier-Yang. As Rallis' formula concerns the central L-values of...

Nov
17
2011

Analysis Seminar

Tangent Cones to Calibrated Currents
Constante Bellettini
2:00pm|West Bldg. Lecture Hall

Calibrated currents are a particular class of volume-minimizers and as such provide interesting explicit examples of solutions to Plateau's problem. Their role goes however much beyond that: they naturally appear when dealing with several geometric...