Formula:KLS:09.08:64

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\HyperpFq 01 @ @ - 1 2 ( x - 1 ) t 2 \HyperpFq 01 @ @ - 1 2 ( x + 1 ) t 2 = n = 0 T n ( x ) ( 1 2 ) n n ! t n \HyperpFq 01 @ @ 1 2 𝑥 1 𝑡 2 \HyperpFq 01 @ @ 1 2 𝑥 1 𝑡 2 superscript subscript 𝑛 0 Chebyshev-polynomial-first-kind-T 𝑛 𝑥 Pochhammer-symbol 1 2 𝑛 𝑛 superscript 𝑡 𝑛 {\displaystyle{\displaystyle{\displaystyle\HyperpFq{0}{1}@@{-}{\frac{1}{2}}{% \frac{(x-1)t}{2}}\ \HyperpFq{0}{1}@@{-}{\frac{1}{2}}{\frac{(x+1)t}{2}}=\sum_{n% =0}^{\infty}\frac{T_{n}\left(x\right)}{{\left(\frac{1}{2}\right)_{n}}n!}t^{n}}}}

Proof

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Symbols List

F q p subscript subscript 𝐹 𝑞 𝑝 {\displaystyle{\displaystyle{\displaystyle{{}_{p}F_{q}}}}}  : generalized hypergeometric function : http://dlmf.nist.gov/16.2#E1
Σ Σ {\displaystyle{\displaystyle{\displaystyle\Sigma}}}  : sum : http://drmf.wmflabs.org/wiki/Definition:sum
T n subscript 𝑇 𝑛 {\displaystyle{\displaystyle{\displaystyle T_{n}}}}  : Chebyshev polynomial of the first kind : http://dlmf.nist.gov/18.3#T1.t1.r8
( a ) n subscript 𝑎 𝑛 {\displaystyle{\displaystyle{\displaystyle(a)_{n}}}}  : Pochhammer symbol : http://dlmf.nist.gov/5.2#iii

Bibliography

Equation in Section 9.8 of KLS.

URL links

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