For r-uniform linear hypergraphs with nonnegative Lin-Lu-Yau curvature, edge-connectivity equals minimum incidence degree, while nonlinear examples violate this with arbitrarily large gaps.
Lin-Lu-Yau Ricci curvature on hypergraphs
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abstract
In this paper, we introduce a unified framework for defining Lin-Lu-Yau (LLY) Ricci curvature on both undirected and directed hypergraphs. By establishing upper bounds and monotonicity properties for the parameterized curvature $\kappa_\alpha$, we justify the well-posedness and compatibility of our definitions. Furthermore, we prove a Bonnet-Myers-type theorem for hypergraphs, which highlights the potential of LLY Ricci curvature in hypergraph analysis, particularly in studying geometric and structural properties. Our results extends the foundational definitions of graph Ricci curvature by Ollivier and Lin-Lu-Yau to the hypergraph setting.
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Edge-connectivity and LLY curvature of hypergraphs
For r-uniform linear hypergraphs with nonnegative Lin-Lu-Yau curvature, edge-connectivity equals minimum incidence degree, while nonlinear examples violate this with arbitrarily large gaps.