Gluing conjecture for globally linked pairs

Let d1d\geq 1, and let GG be the union of graphs G1=(V1,E1)G_1=(V_1,E_1) and G2=(V2,E2)G_2=(V_2,E_2). Suppose that V1V2d+1|V_1\cap V_2|\leq d+1 and that u,vV1V2u,v\in V_1\cap V_2. A pair is linked in a graph in Rd\mathbb{R}^d when its distance is fixed in every equivalent realization, and it is globally linked when this holds for every generic realization.

Gluing conjecture. If {u,v}\{u,v\} is linked in GiG_i in Rd\mathbb{R}^d for i{1,2}i\in\{1,2\}, then {u,v}\{u,v\} is globally linked in GG in Rd\mathbb{R}^d.

This conjecture extends the planar gluing theorem to higher dimensions and to gluings along vertex sets of size at most d+1d+1. The source gives no resolution, so the conjecture remains open.

Sources & referencesView supporting material

Primary source

Dániel Garamvölgyi and Tibor Jordán, “Partial reflections and globally linked pairs in rigid graphs”, arXiv:2305.03412 (2024).

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