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Transactions of the American Mathematical Society
Transactions of the American Mathematical Society
ISSN 1088-6850(online) ISSN 0002-9947(print)


Local asymptotic distribution of zeros of orthogonal polynomials

Authors: Vilmos Totik and Joseph L. Ullman
Journal: Trans. Amer. Math. Soc. 341 (1994), 881-894
MSC: Primary 42C05; Secondary 26C10
MathSciNet review: 1150019
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Abstract: Converse results, which state a relation (inequality) for measures from that on their logarithmic potentials, are applied to local density of zeros of orthogonal polynomials when the measure of orthogonality is a general one with compact support. It will be shown that if the measure is sufficiently thick on a part of its support, then on that part the density of the zeros will be at least as large as the equilibrium measure of the support. A corresponding upper estimate on the distribution of the zeros will also be proved. All of our estimates are sharp, and they localize several well-known results.

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PII: S 0002-9947(1994)1150019-2
Article copyright: © Copyright 1994 American Mathematical Society