Askey–Wilson polynomials
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In mathematics, the Askey–Wilson polynomials (or q-Wilson polynomials) are a family of orthogonal polynomials introduced by Richard Askey and James A. Wilson as q-analogs of the Wilson polynomials.[1] They include many of the other orthogonal polynomials in 1 variable as special or limiting cases, described in the Askey scheme. Askey–Wilson polynomials are the special case of Macdonald polynomials (or Koornwinder polynomials) for the non-reduced affine root system of type (C∨
1, C1), and their 4 parameters a, b, c, d correspond to the 4 orbits of roots of this root system.
They are defined by
where φ is a basic hypergeometric function, x = cos θ, and (,,,)n is the q-Pochhammer symbol. Askey–Wilson functions are a generalization to non-integral values of n.
Proof
Summarize
Perspective
This result can be proven since it is known that
and using the definition of the q-Pochhammer symbol
which leads to the conclusion that it equals
See also
References
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