NCTS(South)/ NCKU Math Colloquium
DATE	2009-11-19　16:10-17:00
PLACE	R204, 2F, NCTS, NCKU
SPEAKER	Prof. Watanabe Michiyuki （Niigata University ）
TITLE	Scattering and inverse scattering problems for stationary wave equations with a friction term in two dimensions
ABSTRACT	We give the existence of outgoing eigenfunction and its scattering amplitude for the two dimensional stationary wave equations with friction term. We also prove in two dimensions that the friction coefficient is uniquely reconstructed from the scattering amplitude at a fixed low energy.