A two-matrix model is introduced whose 1/N expansion yields higher-genus Fuss-Catalan numbers for arbitrary p, together with sum rules and an explicit formula extending the Harer-Zagier result.
Topological recursion for generalised Kontsevich graphs andr-spin intersection numbers,
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A Matrix Model for Higher-Genus Fuss--Catalan Numbers
A two-matrix model is introduced whose 1/N expansion yields higher-genus Fuss-Catalan numbers for arbitrary p, together with sum rules and an explicit formula extending the Harer-Zagier result.