Previous Conferences & Workshops

Feb
25
2013

Members’ Seminar

Collective Phenomena, Collective Motion, and Collective Action in Ecological Systems
2:00pm|S-101

Fundamental questions in basic and applied ecology alike involve complex adaptive systems, in which localized interactions among individual agents give rise to emergent patterns that feed back to affect individual behavior. In such systems, a...

Feb
25
2013

Computer Science/Discrete Mathematics Seminar I

Polar Codes and Randomness Extraction for Structured Sources
11:15am|S-101

Polar codes have recently emerged as a new class of low-complexity codes achieving Shannon capacity. This talk introduces polar codes with emphasis on the probabilistic phenomenon underlying the code construction. New results and connections to...

Feb
22
2013

Joint IAS/Princeton University Symplectic Geometry Seminar

Symplectic Cohomolopgy and Loop Homology
1:30pm|Fine Hall 322

The string topology of Chas-Sullivan produces operations on the homology of the free loop space of orientable manifolds, and analogous structures are known to exist on the symplectic cohomology of their cotangent bundles. Work of Kragh has shown...

Feb
21
2013

Joint IAS/Princeton University Number Theory Seminar

Compactifications of PEL-Type Shimura Varieties and Kuga Families with Ordinary Loci
4:30pm|S-101

I will report on the construction of p-integral models of various algebraic compactifications of PEL-type Shimura varieties and Kuga families, allowing ramification (including deep levels) at p, with good behaviors over the loci where certain...