Generic rigidity of frameworks with orientation-preserving crystallographic symmetry

Details Generic rigidity of frameworks with orientation-preserving crystallographic symmetry Generic rigidity of frameworks with orientation-preserving crystallographic symmetry

2011-08-11

arxiv.org/abs/1108.2518v2

Mathematics

Geometric Topology

70 pages, 9 figures

Scientific paper

We extend our generic rigidity theory for periodic frameworks in the plane to frameworks with a broader class of crystallographic symmetry. Along the way we introduce a new class of combinatorial matroids and associated linear representation results that may be interesting in their own right. The same techniques immediately yield a Maxwell-Laman-type combinatorial characterization for frameworks embedded in 2-dimensional cones that arise as quotients of the plane by a finite order rotation.

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