Global rigidity of random graphs in ℝ
arxiv(2024)
摘要
Consider the Erdős-Rényi random graph process {G_m}_m ≥ 0 in
which we start with an empty graph G_0 on the vertex set [n], and in each
step form G_i from G_i-1 by adding one new edge chosen uniformly at
random. Resolving a conjecture by Benjamini and Tzalik, we give a simple proof
that w.h.p. as soon as G_m has minimum degree 2 it is globally rigid in the
following sense: For any function d E(G_m) →ℝ,
there exists at most one injective function f [n] →ℝ (up to isometry) such that d(ij) = |f(i) - f(j)| for every ij
∈ E(G_m). We also resolve a related question of Girão, Illingworth,
Michel, Powierski, and Scott in the sparse regime for the random graph and give
some open problems.
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