The Darboux process and time-and-band limiting for matrix orthogonal polynomials

We extend to a situation involving matrix valued orthogonal polynomials a scalar result that originates in work of Claude Shannon in laying the mathematical foundations of information theory and a remarkable series of papers by D. Slepian, H. Landau and H. Pollak at Bell Labs in the 1960's. We...

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Bibliographic Details
Authors: Castro Smirnova, Mirta María, Grünbaum, Francisco Alberto
Format: article
Status:Versión aceptada para publicación
Publication Date:2015
Country:España
Institution:Universidad de Sevilla (US)
Repository:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/160290
Online Access:https://hdl.handle.net/11441/160290
https://doi.org/10.1016/j.laa.2015.09.012
Access Level:Open access
Keyword:Time-band limiting
Matrix valued orthogonal polynomials
Darboux process
Description
Summary:We extend to a situation involving matrix valued orthogonal polynomials a scalar result that originates in work of Claude Shannon in laying the mathematical foundations of information theory and a remarkable series of papers by D. Slepian, H. Landau and H. Pollak at Bell Labs in the 1960's. We show that in this case an algebraic miracle that plays a very important role in the classical case survives an application of the so-called Darboux process in the matrix valued context.