Discrete uniformization of polyhedral surfaces

Abstract

The main result of the paper shows that each connected polyhedral surface with a hyperbolic background metric, or a Euclidean background metric with uniform boundedness of radii of circumdisks, is discrete conformal to a complete constant-curvature Riemannian surface equipped with a non-empty closed discrete subset. We also prove a discrete Riemann mapping theorem. The proofs are based on the recent work on the discrete Schwarz lemma, the discrete Liouville theorem for polyhedral surfaces, and a Weyl-type realization theorem for hyperbolic surfaces.