An inverse problem for the minimal surface equation in the presence of a Riemannian metric

Abstract

In this work we study an inverse problem for the minimal surface equation on a Riemannian manifold $({\mathbb{R}}^n,g)$ where the metric is of the form $g(x)=c(x)(\hat{g}\oplus e)$. Here $\hat{g}$ is a simple Riemannian metric on ${\mathbb{R}}^{n-1}$, $e$ is the Euclidean metric on $\mathbb{R}$ and $c$ a smooth positive function. We show that if we know the associated Dirichlet-to-Neumann maps corresponding to metrics $g$ and $\tilde{c}g$, then the Taylor series of the conformal factor $\tilde{c}$ at $x_n=0$ is equal to a positive constant. We also show a partial data result when $n=3$.

21 pages, corrected statements of mains theorems, fixed typos