TRIDENDRIFORM ALGEBRAS ON HYPERGRAPH POLYTOPES
Résumé
We extend the works of Loday-Ronco and Burgunder-Ronco on the tridendriform decomposition of the shuffle product on the faces of associahedra and permutohedra, to other families of nestohedra, including simplices, hypercubes and yet other less known families. We also extend the shuffle product to take more than two arguments, and define accordingly a new algebraic structure, that we call polydendriform, from which the original tridendriform equations can be crisply synthesised.
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