The 2-dimensional rigidity of certain families of graphs

  • Authors:
  • Bill Jackson;Brigitte Servatius;Herman Servatius

  • Affiliations:
  • School of Mathematical Sciences, Queen Mary, University of London, Mile End Road, London E1 4NS England;Mathematical Sciences, Worcester Polytechnic Institute, Worcester MA 01609-2280;Mathematics and Computer Science, Clark University, Worcester, MA 01610-1477

  • Venue:
  • Journal of Graph Theory
  • Year:
  • 2007

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Abstract

Laman's characterization of minimally rigid 2-dimensional generic frameworks gives a matroid structure on the edge set of the underlying graph, as was first pointed out and exploited by L. Lovász and Y. Yemini. Global rigidity has only recently been characterized by a combination of two results due to T. Jordán and the first named author, and R. Connelly, respectively. We use these characterizations to investigate how graph theoretic properties such as transitivity, connectivity and regularity influence (2-dimensional generic) rigidity and global rigidity and apply some of these results to reveal rigidity properties of random graphs. In particular, we characterize the globally rigid vertex transitive graphs, and show that a random d-regular graph is asymptotically almost surely globally rigid for all d ≥ 4. © 2006 Wiley Periodicals, Inc. J Graph Theory 54: 154–166, 2007