I will discuss the problem of approximating a given positive semidefinite matrix A , written as a sum of outer products vv^T , by a much shorter weighted sum in the same outer products. I will then mention an application to sparsification of finite...

Sep

2010

Short Talks by Postdoctoral Members

Torsion-Freeness of Certain Cohomology Groups of PEL-Type Shimura Varieties

Junecue Suh

2:30pm|S-101

Sep

2010

Short Talks by Postdoctoral Members

L^p Concentration of Semiclassical Quasimodes

Melissa Tacy

2:45pm|S-101

Sep

2011

Short Talks by Postdoctoral Members

Stability and Instability of Near-Integrable Hamiltonian Systems

Abed Bounemoura

2:00pm|S-101

Sep

2011

Short Talks by Postdoctoral Members

Pseudo-Holomorphic Curves and Approximations of Zero Entropy Hamiltonian Systems by Periodic Ones

Barney Bramham

2:15pm|S-101

Sep

2011

Short Talks by Postdoctoral Members

Concentration Compactness Method for Global Well-Posedness for the Energy-Supercritical Nonlinear Wave Equation

Aynur Bulut

2:30pm|S-101

Sep

2011

Short Talks by Postdoctoral Members

Limit Theorems for Theta Sums and Applications

Francesco Cellarosi

4:00pm|S-101

Sep

2011

Short Talks by Postdoctoral Members

Legendrian Invariants in Rational Homology Spheres

Joan Licata

4:15pm|S-101

Sep

2011

Short Talks by Postdoctoral Members

Three Knot-Theoretic Perspectives on Algebra

Zsuzsanna Dancso

2:00pm|S-101

Sep

2011

Short Talks by Postdoctoral Members

Residue Classes Containing an Unexpected Number of Primes

Daniel Fiorilli

2:15pm|S-101

Sep

2011

Short Talks by Postdoctoral Members

Categorification in Representation Theory

Anthony Licata

2:30pm|S-101

Sep

2011

Short Talks by Postdoctoral Members

Global Properties of Reeb Dynamics and Pseudo-Holomorphic Curves

Umberto Hryniewicz

4:00pm|S-101

Sep

2011

Short Talks by Postdoctoral Members

Hofer's Geometry of Hamiltonian Diffeomorphisms on Surfaces

Michael Khanevsky

4:15pm|S-101

Sep

2011

Short Talks by Postdoctoral Members

Mean Curvature Flow on Three-Dimensional Cell Structures

Emanuel Lazar

2:00pm|S-101

Sep

2011

Short Talks by Postdoctoral Members

Floer Theory, Dynamics and Hyperkahler Geometry

Sonja Hohloch

2:15pm|S-101

Sep

2011

Short Talks by Postdoctoral Members

Some Algebraic-Combinatoric Problems

Shachar Lovett

2:30pm|S-101

Sep

2011

Short Talks by Postdoctoral Members

Equivariant Topology and Discrete Geometry

Benjamin Matschke

2:45pm|S-101

Oct

2011

Short Talks by Postdoctoral Members

Properties of Random Group Elements

Chen Meiri

2:00pm|S-101

Oct

2011

Short Talks by Postdoctoral Members

Limit Theorems in Pseudorandomness

Raghu Meka

2:15pm|S-101

Oct

2011

Short Talks by Postdoctoral Members

The (Counter-Intuitive) Geometry of Cut and Flow Polytopes

Ankur Moitra

2:30pm|S-101

Oct

2011

Short Talks by Postdoctoral Members

Symplectic and Spectral Theory of Integrable Systems

Alvaro Pelayo

2:45pm|S-101

Oct

2011

Short Talks by Postdoctoral Members

Incidence Geometry and Connections to Theoretical Computer Science

Shubhangi Saraf

2:00pm|S-101

Oct

2011

Short Talks by Postdoctoral Members

Lower Bounds on the Lyapunov Exponent of 1D Schrodinger Operators Using Crude Estimates on the Density of States

Mira Shamis

2:15pm|S-101

Oct

2011

Short Talks by Postdoctoral Members

Sphere Packings, Poisson Statistics and the Epstein Zeta Function

Anders Sodergren

2:30pm|S-101

Oct

2011

Short Talks by Postdoctoral Members

Heegaard Floer Homology and Legendrian Knots

Vera Vertesi

4:00pm|S-101

Oct

2011

Short Talks by Postdoctoral Members

The Density of States for Random Band Matrices

Alexander Sodin

4:15pm|S-101

Oct

2011

Short Talks by Postdoctoral Members

Differential Cohomology

Andrew Stimpson

2:00pm|S-101

Oct

2011

Short Talks by Postdoctoral Members

Diophantine Geometry

Rafael von Kenel

2:15pm|S-101

Oct

2011

Short Talks by Postdoctoral Members

Radiation Field for Einstein Vacuum Equations

Fang Wang

3:30pm|S-101

Oct

2011

Short Talks by Postdoctoral Members

Some Connections Between Homotopy Theory and Logic

Michael Warren

3:45pm|S-101

Sep

2012

Short Talks by Postdoctoral Members

Syntax and Semantics

Benedikt Ahrens

2:00pm|S-101

Sep

2012

Short Talks by Postdoctoral Members

Dispersive Estimates for Wave and Schroedinger Equations

Marius Beceanu

2:15pm|S-101

Sep

2012

Short Talks by Postdoctoral Members

Stability and Instability of Extremal Black Holes

Stefanos Aretakis

2:30pm|S-101

Sep

2012

Short Talks by Postdoctoral Members

Derived de Rham Cohomology

Bhargav Bhatt

4:00pm|S-101

Sep

2012

Short Talks by Postdoctoral Members

Mechanisms Leveraging Arbitrary Set-Theoretic Belief Hierarchies

Jing Chen

4:15pm|S-101

Sep

2012

Short Talks by Postdoctoral Members

Categorical Langlands Correspondence in Positive Characteristic

Tsao-Hsien Chen

4:30pm|S-101

Sep

2012

Short Talks by Postdoctoral Members

The Complexity of Transforming Problem Instances

Andrew Drucker

2:00pm|S-101

Sep

2012

Short Talks by Postdoctoral Members

Locally Decodable Codes

Klim Efremenko

2:15pm|S-101

A code C is said to be Locally Decodable Code with q queries if it is possible to recover any symbol x_j of a message x by making at most q queries to C(x), such that even if a constant fraction of C(x) is corrupted, the decoding algorithm returns...

Sep

2012