The zonotopal reformulation of the Lonely Runner Conjecture

Let nn be a positive integer. Let ZRnZ\subseteq\mathbb{R}^n be a zonotope generated by n+1n+1 vectors of Zn\mathbb{Z}^n in LGP (general linear position), and let x\boldsymbol{x} be the center of ZZ. The zonotopal reformulation of the Lonely Runner Conjecture. Then

(x+nn+2(Zx))Zn.\left(\boldsymbol{x}+\frac{n}{n+2}(Z-\boldsymbol{x})\right)\cap\mathbb{Z}^n\neq\varnothing.

This reformulates the Lonely Runner Conjecture as a lattice-point assertion for a homothetic copy of a centered lattice zonotope. Its resolution is therefore tied to the unresolved cases of the Lonely Runner Conjecture; the source gives no separate resolution evidence.

Sources & referencesView supporting material

Primary source

Matthias Henze and Romanos-Diogenes Malikiosis, “On the covering radius of lattice zonotopes and its relation to view-obstructions and the lonely runner conjecture”, arXiv:1609.01939 (2016).

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