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arXiv · 2605.16700

Uniform Geodesic Drawings of Graphs

Saba Lepsveridze·Oriol Solé-Pi
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Abstract

We study crossing numbers of dense graph drawings whose vertices are uniformly distributed either on the unit sphere or in a compact convex planar domain. We prove a sharp inequality for weighted geodesic drawings on $\mathbb S^2$ in a continuous setting: among all measurable edge arrangements of a fixed density, the amount of crossings is minimized by connecting pairs of points within a fixed distance threshold. We also prove a planar analogue for straight-line drawings in convex planar domains. We transfer these continuous results to finite graphs using a smoothing argument. In the small density limit, we recover the conjectured midrange crossing constant lower bound of $8/(9\pi^2)$ for this restricted model.

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Saba Lepsveridze, Oriol Solé-Pi. 2026-05-15. Uniform Geodesic Drawings of Graphs. https://arxiv.org/abs/2605.16700

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