Preprint
Sep 2026
Beyond expressiveness in pairwise and higher-order models
The debate over pairwise and higher-order models is often framed as a contest of expressive power. This framing is misleading. A graph with arbitrary multivariate node functions can reproduce the node-level dynamics of many hypergraph models, but the hypergraph's grouping information does not thereby disappear: it may...
Cyril Rommens, Pietro Traversa, G. F. de Arruda et al.
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