Friday, May 4, 2001

Gisele Goldstein (University of Memphis)

Forced Elastic Waves, Seismic Sources, and Earthquakes

2:00 pm / CH 435

Friday, March 3, 2001

Daphne Gilbert (Dublin Institute of Technology)

Theory and Application of Subordinacy in the

Spectral Analysis of One Dimensional Schrödinger Operators

2:00 pm / CH 435

Friday, February 16, 2001

Linda Reichl (University of Texas at Austin)

Signatures of Chaos in Open Quantum Systems

1 pm / CH 301

Friday, January 26, 2001

Par Kurlberg (University of Georgia)

Eigenfunctions of Quantized Cat Maps

2:00 pm / CH396

Wednesday, January 24, 2001

Stephen McDowall (University of Rochester)

An Electromagnetic Inverse Problem in Chiral Media

1 pm / CH 458.

Abstract. When an electromagnetic body is immersed in a time-varying electric field, a magnetic field is induced. The relationship between these fields is described by Maxwell's equations and depends on material properties of the body. We consider the inverse problem of determining the electromagnetic material parameters of a body from information obtainable only at the boundary. Such information comes in the form of a boundary map which we assume to be known. In particular we consider the question in the case of a chiral body. In such a body, the relationship between the electromagnetic fields depends not only on the conductivity, electric permittivity and magnetic permeability of the body, but further on the chirality. We shall show that knowledge of the boundary map determines three of the four electromagnetic parameters in the interior. We rewrite Maxwell's equations as a first order perturbation of the Laplacian and construct exponentially growing solutions, and obtain the result in the spirit of complex geometrical optics.

Monday, January 9, 2001

Sumio Yamada (Cornell University)

Weil-Petersson Geometry of Teichmueller spaces and harmonic mappings

2 pm / CH 458.

Friday, January 5, 2001

Yu Yuan (Univ. of Texas at Austin)

A Priori Estimates for Fully Nonlinear Elliptic Equations

2 pm / CH 458.

Friday, October 20, 2000

Alexander Blokh, (UAB)

The trees growing inside the Julia set and the attractors of complex polynomial maps

2pm in CH 396.

Friday, October 13, 2000

Yulia Karpeshina (UAB)

Mathematical problems in the theory of crystals

2pm in CH 396.