Neumann problem for Hessian equation and geometric inequalities in hyperbolic space

Abstract

We establish the existence of solutions to the Neumann problem for the Hessian equation on a smooth, bounded strictly static convex domain in hyperbolic space. The boundary condition determines a unique compatibility constant, and admissible solutions are unique up to a multiple of the static potential. As an application, we give a direct analytic proof of some weighted geometric inequalities for the static convex domain in hyperbolic space.