25-30 November 2024
Saint-Petersburg University
Europe/Moscow timezone

Normal random matrices and recurrence relations for multiple orthogonal polynomials

25 Nov 2024, 12:10
45m
Saint-Petersburg University

Saint-Petersburg University

Department of Mathematics and Computer Sciences, Saint-Petersburg University, Saint Petersburg, 14 line V.O., 29B Yandex maps link: https://yandex.ru/maps/-/CDw2mFl9 Google maps link: https://maps.app.goo.gl/L1Nrzf81wahREKop6 ZOOM streaming at: TBA

Speaker

Alexander Aptekarev (Keldysh Institute of Applied Mathematics of RAS)

Description

Our main attention will be devoted to the normal matrices ensembles, which have many interesting applications (Laplacian growth, Diffusion limited aggregation). An important feature of the orthogonal polynomials ensembles of random matrices is that the joint probability density of their eigenvalues is represented by means of the determinants composed by Christoffel--Darboux (CD) kernels of orthogonal polynomials or their generalizations. For the normal matrices ensembles the corresponded CD kernel is taken for polynomials orthogonal with respect to an area measure. We show that for some special cases of the normal random matrices (related with discrete Painlevé equation) these polynomials are the multiple orthogonal polynomials. This fact makes their asymptotical analysis much easier.

Primary author

Alexander Aptekarev (Keldysh Institute of Applied Mathematics of RAS)

Presentation Materials

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