Diffusive limits of two-parameter ordered Chinese Restaurant Process up-down chains

نویسندگان

چکیده

Nous construisons une famille de diffusions Feller à deux paramètres sur l’ensemble des sous-ensembles ouverts (0, 1). Ces apparaissent comme les limites diffusives chaînes ascendantes et descendantes du processus restaurant chinois paramètres. Les que nous sont analogues ordonnés naturels l’extension paramètres, introduite par Petrov, modèle diffusion avec un nombre infini d’allèles neutres considéré Ethier Kurtz. Récemment, il y a eu intérêt significatif pour construites Petrov. méthodes existantes construire tels utilisent Lévy marqués. Il été conjecturé ces la limite diffusive restauration ordonné considérons ici. progressons cette conjecture en montrant ordonnées existe. De plus, nos donnent description simple explicite générateur noyau décrit termes fonctions quasi-symétriques.

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ژورنال

عنوان ژورنال: Annales de l'I.H.P

سال: 2023

ISSN: ['0246-0203', '1778-7017']

DOI: https://doi.org/10.1214/22-aihp1256