Formula:KLS:14.07:26

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R n ( μ ( x ) ; α , 0 , q - N - 1 , α δ q N + 1 | q ) = R n ( μ ~ ( x ) ; α , δ , N ) q q-Racah-polynomial-R 𝑛 𝜇 𝑥 𝛼 0 superscript 𝑞 𝑁 1 𝛼 𝛿 superscript 𝑞 𝑁 1 𝑞 dual-q-Hahn-R 𝑛 ~ 𝜇 𝑥 𝛼 𝛿 𝑁 𝑞 {\displaystyle{\displaystyle{\displaystyle R_{n}\!\left(\mu(x);\alpha,0,q^{-N-% 1},\alpha\delta q^{N+1}\,|\,q\right)=R_{n}\!\left({\tilde{\mu}}(x);\alpha,% \delta,N\right){q}}}}

Substitution(s)

μ ~ ( x ) = q - x + α δ q x + 1 ~ 𝜇 𝑥 superscript 𝑞 𝑥 𝛼 𝛿 superscript 𝑞 𝑥 1 {\displaystyle{\displaystyle{\displaystyle{\tilde{\mu}}(x)=q^{-x}+\alpha\delta q% ^{x+1}}}} &

μ ( x ) = q - x + γ δ q x + 1 = q - x + q x + γ + δ + 1 = q - x + γ δ q x + 1 𝜇 𝑥 superscript 𝑞 𝑥 𝛾 𝛿 superscript 𝑞 𝑥 1 superscript 𝑞 𝑥 superscript 𝑞 𝑥 𝛾 𝛿 1 superscript 𝑞 𝑥 𝛾 𝛿 superscript 𝑞 𝑥 1 {\displaystyle{\displaystyle{\displaystyle\mu(x)=q^{-x}+\gamma\delta q^{x+1}=q% ^{-x}+q^{x+\gamma+\delta+1}=q^{-x}+\gamma\delta q^{x+1}}}} &
μ ( n ) = q - n + α β q n + 1 𝜇 𝑛 superscript 𝑞 𝑛 𝛼 𝛽 superscript 𝑞 𝑛 1 {\displaystyle{\displaystyle{\displaystyle\mu(n)=q^{-n}+\alpha\beta q^{n+1}}}} &
μ ( x ) := q - x + γ δ q x + 1 assign 𝜇 𝑥 superscript 𝑞 𝑥 𝛾 𝛿 superscript 𝑞 𝑥 1 {\displaystyle{\displaystyle{\displaystyle\mu(x):=q^{-x}+\gamma\delta q^{x+1}}}} &
μ ( x ) = q - x + γ δ q x + 1 = q - x + q x + γ + δ + 1 = q - x + γ δ q x + 1 𝜇 𝑥 superscript 𝑞 𝑥 𝛾 𝛿 superscript 𝑞 𝑥 1 superscript 𝑞 𝑥 superscript 𝑞 𝑥 𝛾 𝛿 1 superscript 𝑞 𝑥 𝛾 𝛿 superscript 𝑞 𝑥 1 {\displaystyle{\displaystyle{\displaystyle\mu(x)=q^{-x}+\gamma\delta q^{x+1}=q% ^{-x}+q^{x+\gamma+\delta+1}=q^{-x}+\gamma\delta q^{x+1}}}} &

μ ( n ) = q - n + α β q n + 1 𝜇 𝑛 superscript 𝑞 𝑛 𝛼 𝛽 superscript 𝑞 𝑛 1 {\displaystyle{\displaystyle{\displaystyle\mu(n)=q^{-n}+\alpha\beta q^{n+1}}}}


Proof

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Symbols List

& : logical and
R n subscript 𝑅 𝑛 {\displaystyle{\displaystyle{\displaystyle R_{n}}}}  : q 𝑞 {\displaystyle{\displaystyle{\displaystyle q}}} -Racah polynomial : http://dlmf.nist.gov/18.28#E19
R n subscript 𝑅 𝑛 {\displaystyle{\displaystyle{\displaystyle R_{n}}}}  : dual q 𝑞 {\displaystyle{\displaystyle{\displaystyle q}}} -Hahn polynomial : http://drmf.wmflabs.org/wiki/Definition:dualqHahn

Bibliography

Equation in Section 14.7 of KLS.

URL links

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