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Toeplitz determinants, Painlevé equations, and special functions. Part I: an operator approach - Lecture 1

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Authors : Basor, Estelle (Author of the conference)
CIRM (Publisher )

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Abstract : These lectures will focus on understanding properties of classical operators and their connections to other important areas of mathematics. Perhaps the simplest example is the asymptotics of determinants of finite Toepltiz matrices, which have constants along the diagonals. The determinants of these $n$ by $n$ size matrices, have (in appropriate cases) an asymptotic expression that is of the form $G^n \times E$ where both G and E are constants. This expansion is useful in describing many statistical quantities variables for certain random matrix models.

In other instances, where the above expression must be modified, the asymptotics correspond to critical temperature cases in the Ising Model, or to cases where the random variables are in some sense singular.

Generalizations of the above result to other settings, for example, convolution operators on the line, are also important. For example, for Wiener-Hopf operators, the analogue of the determinants of finite matrices is a Fredholm determinant. These determinants are especially prominent in random matrix theory where they describe many quantities including the distribution of the largest eigenvalue in the classic Gaussian Unitary Ensemble, and in turn connections to Painleve equations.

The lectures will use operator theory methods to first describe the simplest cases of the asymptotics of determinants for the convolution (both discrete and continuous) operators, then proceed to the more singular cases. Operator theory techniques will also be used to illustrate the links to the Painlevé equations.

Keywords : Topelitz determinant; Fredholm determinant; Szegö theorem; finite Toeplitz matrices; convolutions operators; Painlevé equations

MSC Codes :
47B35 - Toeplitz operators, Hankel operators, Wiener-Hopf operators

Additional resources :
https://www.cirm-math.fr/RepOrga/2105/Slides/Basor_SLides.pdf

    Information on the Video

    Film maker : Hennenfent, Guillaume
    Language : English
    Available date : 25/03/2019
    Conference Date : 11/03/2019
    Subseries : Research School
    arXiv category : Mathematical Physics ; Classical Analysis and ODEs
    Mathematical Area(s) : Analysis and its Applications ; Mathematical Physics
    Format : MP4 (.mp4) - HD
    Video Time : 00:57:38
    Targeted Audience : Researchers ; Graduate Students
    Download : https://videos.cirm-math.fr/2019-03-11_Basor_Part1.mp4

Information on the Event

Event Title : Jean-Morlet chair - Research school: Coulomb gas, integrability and Painlevé equations / Chaire Jean-Morlet - École de recherche : Gaz de Coulomb, intégrabilité et équations de Painlevé
Event Organizers : Bufetov, Alexander ; Cafasso, Mattia ; Grava, Tamara
Dates : 11/03/2019 - 15/03/2019
Event Year : 2019
Event URL : https://www.chairejeanmorlet.com/2105.html

Citation Data

DOI : 10.24350/CIRM.V.19502203
Cite this video as: Basor, Estelle (2019). Toeplitz determinants, Painlevé equations, and special functions. Part I: an operator approach - Lecture 1. CIRM. Audiovisual resource. doi:10.24350/CIRM.V.19502203
URI : http://dx.doi.org/10.24350/CIRM.V.19502203

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