English

Global rigidity of random graphs in $\mathbb{R}$

Combinatorics 2025-02-24 v2

Abstract

We investigate the problem of reconstructing a set PRP\subseteq \mathbb{R} of distinct points, where the only information available about PP consists of the distances between some of the pairs of points. More precisely, we examine which properties of the graph GG of known distances, defined on the vertex set PP, ensure that PP can be uniquely reconstructed up to isometry. We prove that as soon as the random graph process has minimum degree 2, with high probability it can reconstruct all distances within any point set in R\mathbb{R}. This resolves a conjecture of Benjamini and Tzalik. We also study the feasibility and limitations of reconstructing the distances within almost all points using much sparser random graphs. In doing so, we resolve a question posed by Gir\~ao, Illingworth, Michel, Powierski, and Scott.

Keywords

Cite

@article{arxiv.2401.10803,
  title  = {Global rigidity of random graphs in $\mathbb{R}$},
  author = {Richard Montgomery and Rajko Nenadov and Julien Portier and Tibor Szabó},
  journal= {arXiv preprint arXiv:2401.10803},
  year   = {2025}
}

Comments

9 pages. This version includes a new coauthor and an additional result, Theorem 1.5

R2 v1 2026-06-28T14:21:46.568Z