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Hahn, Jacobi, and Krawtchouk polynomials of several variables

  • Yuan Xu [1]
    1. [1] University of Oregon, Eugene, United States
  • Localización: Journal of approximation theory, ISSN 0021-9045, Vol. 195, Nº 1 (July 2015), 2015, págs. 19-42
  • Idioma: inglés
  • DOI: 10.1016/j.jat.2014.03.013
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  • Resumen
    • Hahn polynomials of several variables can be defined by using the Jacobi polynomials on the simplex as a generating function. Starting from this connection, a number of properties for these two families of orthogonal polynomials are derived. It is shown that the Hahn polynomials appear as connection coefficients between several families of orthogonal polynomials on the simplex. Closed-form formulas are derived for the reproducing kernels of the Hahn polynomials and Krawtchouk polynomials. As an application, the Poisson kernels for the Hahn polynomials and the Krawtchouk polynomials are shown to be nonnegative.


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