Homology-dimension conjecture for Vietoris–Rips complexes of hypercube graphs

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Let In\mathbb{I}_n denote the nn-dimensional hypercube graph, and let VR(In;r)\mathcal{VR}(\mathbb{I}_n;r) be its Vietoris–Rips complex at scale rr. For r∈{2,3}r\in\{2,3\}, write H~i(−;Z)\widetilde{H}_i(-;\mathbb{Z}) for reduced homology in dimension ii. Homology-dimension conjecture. For n≥r+2n\geq r+2,

H~i(VR(In;r);Z)≠0\widetilde{H}_i(\mathcal{VR}(\mathbb{I}_n;r);\mathbb{Z})\neq 0

if and only if i∈{r+1,2r−1}i\in\{r+1,2^r-1\}. This extends the established cases at scales 22 and 33, and predicts that these are the only dimensions supporting nontrivial homology for the indicated parameters.

References

Primary source

Samir Shukla, “On Vietoris–Rips complexes (with scale 3) of hypercube graphs”, arXiv:2202.02756 (2023).

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