English

Point-hyperplane frameworks, slider joints, and rigidity preserving transformations

Combinatorics 2017-03-21 v1 Metric Geometry

Abstract

A one-to-one correspondence between the infinitesimal motions of bar-joint frameworks in Rd\mathbb{R}^d and those in Sd\mathbb{S}^d is a classical observation by Pogorelov, and further connections among different rigidity models in various different spaces have been extensively studied. In this paper, we shall extend this line of research to include the infinitesimal rigidity of frameworks consisting of points and hyperplanes. This enables us to understand correspondences between point-hyperplane rigidity, classical bar-joint rigidity, and scene analysis. Among other results, we derive a combinatorial characterization of graphs that can be realized as infinitesimally rigid frameworks in the plane with a given set of points collinear. This extends a result by Jackson and Jord\'{a}n, which deals with the case when three points are collinear.

Keywords

Cite

@article{arxiv.1703.06844,
  title  = {Point-hyperplane frameworks, slider joints, and rigidity preserving transformations},
  author = {Yaser Eftekhari and Bill Jackson and Anthony Nixon and Bernd Schulze and Shin-ichi Tanigawa and Walter Whiteley},
  journal= {arXiv preprint arXiv:1703.06844},
  year   = {2017}
}

Comments

33 pages, 9 figures

R2 v1 2026-06-22T18:51:14.571Z