JOINT PDE AND DIFFERENTIAL GEOMETRY SEMINAR

                             Monday, April 10

                            Communications 226
                                 3:45 p.m.

                               David Colton
                         (University of Delaware)


                      THE ELECTRIC FAR FIELD OPERATOR

We will examine spectral properties of the far field operator corresponding
to the scattering of time harmonic electromagnetic waves by an inhomogeneous
medium of compact support.Included will be the existence and location of 
eigenvalues in the complex plane and preliminary results on their physical
significance.A few comments will also be made on "transmission eigenvalues"
and the recovery of the index of refraction in the case of spherical symmetry.


For more information about this seminar, view the Differential Geometry
Seminar World-Wide Web page at 

    https://www.math.washington.edu/~lee/Seminars/dg.html


To request disability accommodations, contact the Office of the ADA
Coordinator, at least ten days in advance of the event: 543-6450 (voice);
543-6452 (TDD); 685-3885 (FAX); access@u.washington.edu (E-mail).