Previous Conferences & Workshops

Mar
06
2019

Workshop on Geometric Functionals: Analysis and Applications

Loop products, closed geodesics and self-intersections
11:30am|Simonyi Hall 101

Abstract: Let M be a compact Riemannian manifold. Morse theory for the energy function on the free loopspace LM of M gives a link between geometry and topology, between the growth of the index of the iterates of closed geodesics on M, and the...

Mar
06
2019

Workshop on Geometric Functionals: Analysis and Applications

Normalized harmonic map flow
Michael Struwe
10:00am|Simonyi Hall 101

Abstract: Finding non-constant harmonic 3-spheres for a closed target manifold N is a prototype of a super-critical variational problem. In fact, the
direct method fails, as the infimum of the Dirichlet energy in any homotopy class of maps from the...

Mar
05
2019

Workshop on Geometric Functionals: Analysis and Applications

Liouville Equations and Functional Determinants
4:00pm|Simonyi Hall 101

Abstract: Functional Determinants are quantities constructed out of spectra of conformally covariant operators, and are explicit in dimension two and four, due to formulas by Polyakov and Branson-Oersted. Extremizing them in a conformal class...

Mar
05
2019

Workshop on Geometric Functionals: Analysis and Applications

Periodic Geodesics and Geodesic Nets on Riemannian Manifolds
2:30pm|Simonyi Hall 101

Abstract: I will talk about periodic geodesics, geodesic loops, and geodesic nets on Riemannian manifolds. More specifically, I will discuss some curvature-free upper bounds for compact manifolds and the existence results for non-compact manifolds...

Mar
05
2019

Workshop on Geometric Functionals: Analysis and Applications

Spacetime positive mass theorem
11:30am|Simonyi Hall 101

Abstract: The spacetime positive mass theorem says that an asymptotically flat initial data set with the dominant energy condition must have a timelike energy-momentum vector, unless the initial data set is in the Minkowski spacetime. We will review...

Mar
05
2019

Computer Science/Discrete Mathematics Seminar II

Improved List-Decoding and Local List-Decoding Algorithms for Polynomial Codes
10:30am|West Building Lecture Hall

I will talk about a recent result showing that some well-studied polynomial-based error-correcting codes (Folded Reed-Solomon Codes and Multiplicity Codes) are "list-decodable upto capacity with constant list-size".

At its core, this is a statement...

Mar
05
2019

Workshop on Geometric Functionals: Analysis and Applications

L^p curvatures : some analysis questions from gauge theory
10:00am|Simonyi Hall 101

Abstract : What are the possible limits of smooth curvatures with uniformly bounded $L^p$ norms ?We shall see that the attempts to give a satisfying answer to this natural question from the calculus of variation of gauge theory brings us to numerous...