Scattering data versus lens data on surfaces
classification
🧮 math.DG
keywords
datageodesicsscatteringriemanniantrappedallowedboundaryconjugate
read the original abstract
The scattering data of a Riemannian manifold with boundary record the incoming and outgoing directions of each geodesic passing through. We show that the scattering data of a generic Riemannian surface with no trapped geodesics and no conjugate points determine the lengths of geodesics. Counterexamples exists when trapped geodesics are allowed.
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