Speaker: Lassi Päivärinta, Department of Mathematics and
Statistics/Rolf Nevanlinna Institute, University of Helsinki 

Time, date, place: 3pm Wednesday, 3 May 2006, POT 945. 

Title: Two-dimensional inverse problems

Abstract: In many cases two-dimensional inverse problems have turned
out to be more difficult then their higher dimensional counterparts.
This is specially the case with inverse boundary value problems and
with inverse scattering problems with fixed energy. In the talk we
recall  some open problems in the field as well as demonstrate some
resent development. In particular,  we will discuss  the solution of
the two-dimensional Calderón problem, the detection of singularities in
Shrödinger scattering  and finally consider  a 2D inverse problem for
random Markov potential. The research  is done jointly with K. Astala,
M. Lassas, P.Ola, V. Serov and E. Saksman.




Päivärinta's visit is funded, in part, by the College Enrichment
Fund of the College of Arts and Sciences.