Analyticity is the exact regularity threshold for uniqueness in the Riemannian Schrödinger problem with fixed analytic potential and in the anisotropic Calderón problem at fixed frequency.
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A Sharp Regularity Threshold for Uniqueness in Riemannian Calder\'on-type Problems
Analyticity is the exact regularity threshold for uniqueness in the Riemannian Schrödinger problem with fixed analytic potential and in the anisotropic Calderón problem at fixed frequency.