Previous Special Year Seminar

Apr
07
2009

Geometric PDE Seminar

Half-Laplacian Problems Related to Crystal Dislocations
2:00pm|S-101

Dislocations are line defects in crystals, and can be modeled using non-local operators. In this talk we will consider a related reaction-diffusion equation with a half-Laplacian. We show that the limit dynamics is characterized by a system of ODEs...

Mar
31
2009

Geometric PDE Seminar

On a Class of Fully Nonlinear Flow in K\"ahler Geometry
2:00pm|S-101

We study a class of fully nonlinear metric flow on K\"ahler manifolds, which includes the J-flow as a special case. We provide a sufficient and necessary condition for the long time convergence of the flow, generalizing the result of Song-Weinkove...

Mar
24
2009

Geometric PDE Seminar

Homogenization of Nonlinear Stochastic Evolution Problems in Non Periodically Perforated Domains
3:30pm|S-101

The talk is devoted to the homogenization of a stochastic evolution problem with non Lipschitz forcing. The problem is considered in a sequence of perforated cylindrical domains obtained from the removal of tiny cylinders from a fixed one (the...

Mar
24
2009

Geometric PDE Seminar

Green Functions and Mean Field Equation at Critical Parameters on Torus
2:00pm|S-101

The location of blowup points is often related to critical points of Green function. In fact, Green function plays a important role to understand the solutions structure of mean field equations. We will show how to use the elliptic function and the...

Mar
23
2009

Special Geometric PDE Seminar

Three Dimensional Cauchy Riemann Manifolds
John Bland
3:30pm|S-101

A three dimensional strongly pseudoconvex Cauchy Riemann manifold can be considered as a contact manifold with a conformal structure on the hyperplane distribution. In this talk, we will discuss CR structures near the standard one on S^3 , the...

Mar
17
2009

Geometric PDE Seminar

Renormalized Volume Coefficients and Fully Nonlinear Equations
Robin Graham
2:00pm|S-101

The "sigma_k Yamabe problem" is a fully nonlinear generalization of the Yamabe problem, in which one attempts to find a conformal multiple of a given metric to make constant the k-th elementary symmetric function of the eigenvalues of the Schouten...

Mar
10
2009

Geometric PDE Seminar

Quadruple Junction Solutions in the Entire Three Dimensional Space
Changfeng Gui
3:30pm|S-101

In this talk, I will discuss the quadruple junction solutions in the entire three dimensional space to a vector-valued Allen-Cahn equation which models multiple phase separation. The solution is the basic profile of the local structure near a...

Mar
10
2009

Geometric PDE Seminar

Einstein Metrics, Complex Surfaces, and Symplectic 4-Manifolds
Claude LeBrun
2:00pm|S-101
Mar
09
2009

Special Mini-Course in Geometric PDE

Dirichlet Duality and the Nonlinear Dirichlet Problem Part I: For domains in R^n; Part II: On Riemannian Manifolds
H. Blaine Lawson, Jr.
3:30pm|S-101

Manifolds with geometric structure carry large and useful families of non-standard “subharmonic” functions. For example, any almost complex manifold with hermitian metric carries plurisubharmonic functions. Moreover, it also carries “Lagrangian...