English

The global rigidity of a framework is not an affine-invariant property

Metric Geometry 2019-03-12 v2

Abstract

It is well-known that the property of a bar-and-joint framework `to be infinitesimally rigid' is invariant under projective transformations of Eucliean dd-space for every d2d\geqslant 2. It is less known that the property of a bar-and-joint framework `to be globally rigid' is not invariant even under affine transformations of the Euclidean plane. In this note, we prove of the latter statement for Euclidean dd-space for every d2d\geqslant 2.

Keywords

Cite

@article{arxiv.1902.09210,
  title  = {The global rigidity of a framework is not an affine-invariant property},
  author = {Victor Alexandrov},
  journal= {arXiv preprint arXiv:1902.09210},
  year   = {2019}
}

Comments

7 pages, 4 figures. In version 2, the main result of this preprint is positioned more accurately with respect to the results of the predecessors