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    Asymptotic properties of Müntz orthogonal polynomials

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    stefansson_ulfar_f_201008_phd.pdf (792.6Kb)
    Date
    2010-05-12
    Author
    Stefánsson, Úlfar F.
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    Abstract
    Müntz polynomials arise from consideration of Müntz's Theorem, which is a beautiful generalization of Weierstrass's Theorem. We prove a new surprisingly simple representation for the Müntz orthogonal polynomials on the interval of orthogonality, and in particular obtain new formulas for some of the classical orthogonal polynomials (e.g. Legendre, Jacobi, Laguerre). This allows us to determine the strong asymptotics and endpoint limit asymptotics on the interval. The zero spacing behavior follows, as well as estimates for the smallest and largest zeros. This is the first time that such asymptotics have been obtained for general Müntz exponents. We also look at the asymptotic behavior outside the interval and the asymptotic properties of the associated Christoffel functions.
    URI
    http://hdl.handle.net/1853/34759
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    • Georgia Tech Theses and Dissertations [23403]
    • School of Mathematics Theses and Dissertations [424]

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