On the infinitesimal rigidity of weakly convex polyhedra

Details On the infinitesimal rigidity of weakly convex polyhedra On the infinitesimal rigidity of weakly convex polyhedra

2006-06-27

arxiv.org/abs/math/0606681v2

Mathematics

Differential Geometry

v2: same as v1 but with 2 figures

Scientific paper

The main motivation here is a question: whether any polyhedron which can be subdivided into convex pieces without adding a vertex, and which has the same vertices as a convex polyhedron, is infinitesimally rigid. We prove that it is indeed the case for two classes of polyhedra: those obtained from a convex polyhedron by ``denting'' at most two edges at a common vertex, and suspensions with a natural subdivision.

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