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Communication Dans Un Congrès Discrete Mathematics and Theoretical Computer Science Année : 2013

On Kerov polynomials for Jack characters (extended abstract)

Résumé

We consider a deformation of Kerov character polynomials, linked to Jack symmetric functions. It has been introduced recently by M. Lassalle, who formulated several conjectures on these objects, suggesting some underlying combinatorics. We give a partial result in this direction, showing that some quantities are polynomials in the Jack parameter $\alpha$ with prescribed degree. Our result has several interesting consequences in various directions. Firstly, we give a new proof of the fact that the coefficients of Jack polynomials expanded in the monomial or power-sum basis depend polynomially in $\alpha$. Secondly, we describe asymptotically the shape of random Young diagrams under some deformation of Plancherel measure.
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Dates et versions

hal-00836850 , version 1 (09-12-2015)

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Valentin Féray, Maciej Dołęga. On Kerov polynomials for Jack characters (extended abstract). FPSAC 2013, Jun 2013, Paris, France. pp.569-580, ⟨10.46298/dmtcs.2322⟩. ⟨hal-00836850⟩

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