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math-ph2017
Lens rigidity in scattering by non-trapping obstacles
Luchezar Stoyanov
We prove that if two non-trapping obstacles in satisfy some rather weak non-degeneracy conditions and the scattering rays in their exteriors have (almost) the same t…
math-ph2009★ 1 cited
Singularities of the scattering kernel related to trapping rays
Vesselin Petkov, Luchezar Stoyanov
An obstacle odd, is called trapping if there exists at least one generalized bicharacteristic of the wave equation staying in a neighborhoo…