Bhardwaj–Narayanan–Venkataraman conjecture on lonely times

Let VV be an nn-set of positive integer speeds, let vnv_n denote the largest speed, and let x\|x\| be the distance from xx to the nearest integer. Conjecture on lonely times. For every nNn\in\mathbb{N} and every such VV, there is a positive integer MM such that, if

t=M2ln2vn+1(n+1)vn,t=\frac{M}{2^{\lceil\ln_2v_n+1\rceil}(n+1)v_n},

then

minvVtv1n+1.\min_{v\in V}\|tv\|\geq\frac{1}{n+1}.

The conjecture proposes a structured time at which the origin is lonely and is described in the source as supported by simulations. Its general status is open.

Sources & referencesView supporting material

Primary source

Guillem Perarnau and Oriol Serra, “The Lonely Runner Conjecture turns 60”, arXiv:2409.20160 (2025).

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