q-Analogues of Some Multivariable Biorthogonal Polynomials
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multivariablepolynomialsbiorthogonalderivedfunctionweightadditionaskey-roy
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A q-analogue a pair of multivariable biorthogonal polynomials found by M.V.Tratnik in 1989 is derived. The weight function is a product of a multivariable version of the integrand in the Askey-Roy integral and of the Askey-Wilson weight function in a single variable. In addition, a biorthogonality relation is derived for certain bivariate extensions of the $q$-Racah polynomials.
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