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Applications of a new formula for OPUC with periodic Verblunsky coefficients

Applications of a new formula for OPUC with periodic Verblunsky coefficients We find a new formula for the orthonormal polynomials corresponding to a measure $$\mu $$ μ on the unit circle whose Verblunsky coefficients are periodic. The formula is presented using the Chebyshev polynomials of the second kind and the discriminant of the periodic sequence. We present several applications including a resolution of a problem suggested by Simon (Commun Pure Appl Math 59(7):1042–1062, 2006) regarding the existence of singular points in the bands of the support of the measure and a universality result at all points of the essential support of $$\mu $$ μ . http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research in the Mathematical Sciences Springer Journals

Applications of a new formula for OPUC with periodic Verblunsky coefficients

Research in the Mathematical Sciences , Volume 5 (4) – Oct 19, 2018

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References (47)

Publisher
Springer Journals
Copyright
Copyright © 2018 by SpringerNature
Subject
Mathematics; Mathematics, general; Applications of Mathematics; Computational Mathematics and Numerical Analysis
eISSN
2197-9847
DOI
10.1007/s40687-018-0165-x
Publisher site
See Article on Publisher Site

Abstract

We find a new formula for the orthonormal polynomials corresponding to a measure $$\mu $$ μ on the unit circle whose Verblunsky coefficients are periodic. The formula is presented using the Chebyshev polynomials of the second kind and the discriminant of the periodic sequence. We present several applications including a resolution of a problem suggested by Simon (Commun Pure Appl Math 59(7):1042–1062, 2006) regarding the existence of singular points in the bands of the support of the measure and a universality result at all points of the essential support of $$\mu $$ μ .

Journal

Research in the Mathematical SciencesSpringer Journals

Published: Oct 19, 2018

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