Global Uniqueness for the Smooth Isotropic Elasticity Inverse Problem

We prove that the full static displacement-to-traction map uniquely determines both real smooth Lamé moduli on every bounded connected smooth domain in $\R^3$, provided $\mu>0$ and $3\lambda+2\mu>0$ on the closure. This resolves the smooth three-dimensional isotropic elastic Calderón uniqueness problem under these positivity assumptions.