
doi: 10.1137/0509071
Explicit forms of the coefficients $E(x,y,z)$ in the expansion $Q_n (x)Q_n (y) = \sum_{z = 0}^N {E(x,y,z)} Q_n (z)$, where $Q_n (x) = Q_n (x;\alpha ,\beta ,N)$ is the Hahn polynomial in the integer-valued variable x, $0 \leqq x \leqq N$, are given. It is shown that if $\alpha \leqq \beta N - 1$.
Orthogonal polynomials and functions of hypergeometric type (Jacobi, Laguerre, Hermite, Askey scheme, etc.), Spherical Functions on Compact Lie Groups, Koornwinder Polynomials, Gegenbauer and Krawtchouk Polynomials, Orthogonal Polynomials in Two Variables, Orthogonal Polynomials, Hahn-Eberlein Polynomials
Orthogonal polynomials and functions of hypergeometric type (Jacobi, Laguerre, Hermite, Askey scheme, etc.), Spherical Functions on Compact Lie Groups, Koornwinder Polynomials, Gegenbauer and Krawtchouk Polynomials, Orthogonal Polynomials in Two Variables, Orthogonal Polynomials, Hahn-Eberlein Polynomials
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