Rigidity of Polyhedral Surfaces, III

Details Rigidity of Polyhedral Surfaces, III Rigidity of Polyhedral Surfaces, III

2010-10-15

arxiv.org/abs/1010.3284v1

Mathematics

Geometric Topology

17 pages, 1 figure

Scientific paper

This paper investigates several global rigidity issues for polyhedral surfaces including inversive distance circle packings. Inversive distance circle packings are polyhedral surfaces introduced by P. Bowers and K. Stephenson as a generalization of Andreev-Thurston's circle packing. They conjectured that inversive distance circle packings are rigid. Using a recent work of R. Guo on variational principle associated to the inversive distance circle packing, we prove rigidity conjecture of Bowers-Stephenson in this paper. We also show that each polyhedral metric on a triangulated surface is determined by various discrete curvatures introduced in our previous work, verifying a conjecture in \cite{Lu1}. As a consequence, we show that the discrete Laplacian operator determines a Euclidean polyhedral metric up to scaling.

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