Near-rnr_n homotopy-type conjecture for Vietoris–Rips complexes of spheres

Let SnS^n be the nn-sphere, let rnr_n be the scale defined in the paper, let SO(n+1)\mathrm{SO}(n+1) be the special orthogonal group, let An+2A_{n+2} be the alternating group, and let * denote the join. Near-rnr_n conjecture. For every nn, there exists ε>0\varepsilon>0 such that

VR(Sn;r)SnSO(n+1)An+2\mathrm{VR}(S^n;r)\simeq S^n*\frac{\mathrm{SO}(n+1)}{A_{n+2}}

for all rn<r<rn+εr_n<r<r_n+\varepsilon. This is a local prediction for the homotopy type immediately above the scale rnr_n; the conjecture remains open.

Sources & referencesView supporting material

Primary source

Henry Adams, Johnathan Bush and Žiga Virk, “The connectivity of Vietoris-Rips complexes of spheres”, arXiv:2407.15818 (2024).

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