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Dual forms of the orthogonality relations of some classical q-orthogonal polynomials (2207.13563v2)

Published 27 Jul 2022 in math.CO

Abstract: In this paper, by introducing new matrix operations and using a specific inverse relation, we establish the dual forms of the orthogonality relations for some well-known discrete and continuous $q$-orthogonal polynomials from the Askey-scheme such as the little and big $q$-Jacobi, $q$-Racah, (generalized) $q$-Laguerre, as well as the Askey-Wilson polynomials. As one of the most interesting results, we show that the Askey-Wilson $q$-beta integral represented in terms of the VWP-balanced $\,_8\phi_7$ series is just a dual form of the orthogonality relation of the Askey-Wilson polynomials.

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