Geometry of configuration spaces of tensegrities

Details Geometry of configuration spaces of tensegrities Geometry of configuration spaces of tensegrities

2008-06-30

arxiv.org/abs/0806.4976v2

Mathematics

Combinatorics

Scientific paper

Consider a graph G with n vertices. In this paper we study geometric conditions for an n-tuple of points in R^d to admit a tensegrity with underlying graph G. We introduce and investigate a natural stratification, depending on G, of the configuration space of all n-tuples in R^d. In particular we find surgeries on graphs that give relations between different strata. Based on numerous examples we give a description of geometric conditions defining the strata for plane tensegrities, we conjecture that the list of such conditions is sufficient to describe any stratum. We conclude the paper with particular examples of strata for tensegrities in the plane with a small number of vertices.

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