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Table des matières de ce fascicule | Article suivant
Guo-Niu Han The Nekrasov-Okounkov hook length formula: refinement, elementary proof, extension and applications (La formule de longueur d’équerre de Nekrasov-Okounkov : raffinement, démonstration élémentaire, extension et applications) Annales de l'institut Fourier, 60 no. 1 (2010), p. 1-29 Article: sur abonnement Class. Math.: 05A15, 05A17, 05A19, 11P82, 17B22 Mots clés: longueur d’équerre, formule d’équerre, partition, $t$-core, produit d’Euler, identités de Macdonald Résumé - Abstract Nekrasov et Okounkov ont obtenu une nouvelle formule pour le développement des puissances du produit d’Euler, à l’aide des longueurs d’équerre des partitions d’entiers, dans leur étude de la théorie de Seiberg-Witten. Nous proposons un raffinement de cette formule reposant sur une propriété nouvelle des $t$-cores, qui permet de donner une démonstration élémentaire en faisant usage des identités de Macdonald. Nous obtenons aussi une extension, en ajoutant deux paramètres supplémentaires, qui peut être considérée comme une interpolation discrète entre les identités de Macdonald et la fonction génératrice des $t$-cores. Plusieurs applications en sont déduites, y compris la “formule d’équerre pointée”. Bibliographie [2] G. E. Andrews, The Theory of Partitions, Encyclopedia of Math. and Its Appl. 2, Addison-Wesley, Reading, 1976 MR 557013 | Zbl 0371.10001 [3] R. Bacher & L. Manivel, “Hooks and Powers of Parts in Partitions”, article B47d, 11 pages, 2001 arXiv | MR 1894024 | Zbl 1021.05008 [4] A. Berkovich & F. G. Garvan, “The BG-rank of a partition and its applications”, Adv. in Appl. Math. 40 (2008), p. 377-400 MR 2402176 | Zbl pre05268092 [5] C. Bessenrodt, “On hooks of Young diagrams”, Ann. of Comb. 2 (1998), p. 103-110 MR 1682922 | Zbl 0929.05091 [6] E. Carlsson & A. Okounkov, “Exts and Vertex Operators” arXiv [7] P. Cellini, P. M. Frajria & P. 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