Problems / differential-equations
differential-equations / Inverse problems; elliptic PDE on manifolds
The Lee-Uhlmann conjecture: smooth anisotropic Calderon uniqueness in dimension at least three, from one boundary patch
Theorem 1.1: for n≥3, compact connected smooth M with smooth boundary and any nonempty proper relatively open Γ⊂∂M, if smooth metrics satisfy Λg1,Γ=Λg2,Γ (energy form with input and output on Γ), then g2=Φ∗g1 for a smooth diffeomorphism with Φ∣Γ=Id. Corollaries: full-boundary uniqueness, and uniqueness of smooth positive scalar conductivities on smooth Euclidean domains from one same-patch measurement. The October 5 companion adds a smooth unitary connection on a trivial Hermitian rank-two bundle, determined up to gauge fixed on the patch. Not shown: dimension two, nonsmooth metrics, stability estimates, or reconstruction.