We prove that if two non-trapping obstacles in $\mathbb{R}^n$ satisfy somerather weak non-degeneracy conditions and the scattering rays in theirexteriors have (almost) the same travelling times or (almost) the samescattering length spectrum, then they coincide.
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机译:我们证明,如果$ \ mathbb {R} ^ n $中的两个非陷阱障碍满足了相当弱的非简并性条件,并且它们外部的散射光线具有(几乎)相同的传播时间或(几乎)相同的散射长度谱,则他们重合。
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