Agenda de l’IDP

GT ADG-Systèmes Dynamiques

About a class of orthogonal polynomials with unbounded recurrence coefficients
Bartosz Trojan (Académie des Sciences de Pologne et École Polytechnique de Wroclaw-INVITÉ CNRS IDP)
Tuesday 12 September 2023 14:00 -  Orléans institut Denis Poisson -  pticrème

Résumé :
In this talk we introduce a class of orthogonal polynomials with N-periodically modulated Jacobi parameters.
The class is sufficiently large to contain many classical polynomials such as Hermite, Meixner—Pollaczek, Laguerre.
We implement a program in which we study convergence of generalized Tur\'an determinants, approximation of the density of
the orthogonality measure, uniform asymptotic behavior of orthogonal polynomials as well as Christoffel--Darboux kernels.
We also study the asymptotic distribution of zeros. The talk is based on joint works with Grzegorz Świderski (Polish
Academy of Sciences & University of Wroclaw).



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