A Comparative Study of Curvature on Trees
Combinatorics
2025-11-04 v3
Abstract
There are several interrelated notions of discrete curvature on graphs. Many approaches utilize the optimal transportation metric on its probability simplex or the distance matrix of the graph. In this survey article, we compute formulas for three different types of curvature on graphs. Along the way, we obtain a comparison result for the curvatures under consideration, a degree-diameter theorem for trees, and a combinatorial identity for certain sums of distances on trees.
Keywords
Cite
@article{arxiv.2412.20661,
title = {A Comparative Study of Curvature on Trees},
author = {Sawyer Jack Robertson},
journal= {arXiv preprint arXiv:2412.20661},
year = {2025}
}
Comments
17 pages, 9 figures. Titled updated in v3 to reflect scope of article