Uniqueness for a hyperbolic inverse problem with angular control on the coefficients

Rakesh, Paul Sacks

Suppose $q_i(x)$, $i=1,2$ are smooth functions on ${\mathbb{R}}^3$ and $U_i(x,t)$ the solutions of the initial value problem {gather*} \pa_t^2 U_i- ΔU_i - q_i(x) U_i = δ(x,t), \qquad (x,t) \…