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Multivariate Hahn polynomials and difference equations

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arxiv 2305.09170 v3 pith:ZYQ6CEER submitted 2023-05-16 math.CA math.PR

classification math.CAmath.PR
keywords multivariatepolynomialsdifferencehahnderivedkrawtchouklessmain
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The multivariate Hahn polynomials are constructed explicitly as the common eigenvectors of a family of second order difference operators. They are orthogonal with respect to the hypergeometric multinomial distribution. The main difference operator is adopted from the work of Karlin-McGregor in 1975. The minor ones are the subsets of the main one containing less and less variables. These operators commute with each other. In contrast to the multivariate Krawtchouk and Rahman like polynomials derived recently, the entire multivariate Hahn polynomials are rational functions of the system parameters. Complete sets of multivariate Krawtchouk and Meixner polynomials are derived by limiting procedures.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. A discrete Smorodinsky--Winternitz II superintegrable system

    math-ph 2026-08 conditional novelty 6.0 of 10

    A triangular-lattice finite-difference model is constructed that is maximally superintegrable, exactly solvable by Krawtchouk and dual Hahn polynomials, and whose continuum limit reproduces the continuous Smorodinsky-...

  2. A discrete Smorodinsky--Winternitz I superintegrable system

    math-ph 2026-08 conditional novelty 6.0 of 10

    A finite discrete realization of the Smorodinsky-Winternitz I superintegrable system is constructed, solved exactly by bivariate dual Hahn polynomials, and shown to have a continuum limit that recovers the continuous model.

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