Lens rigidity in scattering by non-trapping obstacles

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We prove that if two non-trapping obstacles in (Formula presented.) satisfy some rather weak non-degeneracy conditions and the scattering rays in their exteriors have (almost) the same travelling times or (almost) the same scattering length spectrum, then they coincide.

Original languageEnglish
Pages (from-to)391–402
Number of pages12
JournalArchiv der Mathematik
Issue number4
Publication statusPublished - 2018


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