Integrable Systems Seminar
Thursday, April 3, 2003, 4:00pm, 120 Physics
Michael Taylor (UNC Chapel Hill, Department of Mathematics)
Boundary regularity for the Ricci equation, geometric convergence, and Gelfand's inverse boundary problem
Abstract:- This talk explores and ties together three themes. The first is to
establish regularity of a metric tensor, on a manifold with boundary, on which
there are given Ricci curvature bounds, on the manifold and its boundary, and
a Lipschitz bound on the mean curvature of the boundary. The second is to
establish geometric convergence of a (sub)sequence of manifolds with boundary
with such geometrical bounds and also an upper bound on the diameter and a
lower bound on the injectivity radius, making use of the first part. The
third theme involves the uniqueness and conditional stability of an inverse
problem proposed by Gelfand, making essential use of the first two parts.
This is a report on joint work with M. Anderson, A. Katsuda, Y. Kurylev,
and M. Lassas.
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