A decorated tree approach to random permutations in substitution-closed classes
Résumé
We establish a novel bijective encoding that represents permutations as forests ofdecorated (or enriched) trees. This allows us to prove local convergence of uniformrandom permutations from substitution-closed classes satisfying a criticality constraint.It also enables us to reprove and strengthen permuton limits for these classes in anew way, that uses a semi-local version of Aldous’ skeleton decomposition for size-constrained Galton–Watson trees.
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