Formula:KLS:14.20:25

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( t ; q ) \qHyperrphis 21 @ @ 0 , 0 a q q x t = n = 0 ( - 1 ) n q 1 2 n ( n - 1 ) ( q ; q ) n p n ( x ; a ; q ) t n    ( | x t | < 1 ) fragments q-Pochhammer-symbol 𝑡 𝑞 \qHyperrphis 21 @ @ 0 , 0 a q q x t superscript subscript 𝑛 0 superscript 1 𝑛 superscript 𝑞 1 2 𝑛 𝑛 1 q-Pochhammer-symbol 𝑞 𝑞 𝑛 little-q-Laguerre-Wall-polynomial-p 𝑛 𝑥 𝑎 𝑞 superscript 𝑡 𝑛 italic-   fragments ( | x t | 1 ) {\displaystyle{\displaystyle{\displaystyle\left(t;q\right)_{\infty}% \qHyperrphis{2}{1}@@{0,0}{aq}{q}{xt}=\sum_{n=0}^{\infty}\frac{(-1)^{n}q^{\frac% {1}{2}n(n-1)}}{\left(q;q\right)_{n}}p_{n}\!\left(x;a;q\right)t^{n}\qquad(|xt|<% 1)}}}

Proof

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Symbols List

( a ; q ) n subscript 𝑎 𝑞 𝑛 {\displaystyle{\displaystyle{\displaystyle(a;q)_{n}}}}  : q 𝑞 {\displaystyle{\displaystyle{\displaystyle q}}} -Pochhammer symbol : http://dlmf.nist.gov/5.18#i http://dlmf.nist.gov/17.2#SS1.p1
ϕ s r subscript subscript italic-ϕ 𝑠 𝑟 {\displaystyle{\displaystyle{\displaystyle{{}_{r}\phi_{s}}}}}  : basic hypergeometric (or q 𝑞 {\displaystyle{\displaystyle{\displaystyle q}}} -hypergeometric) function : http://dlmf.nist.gov/17.4#E1
Σ Σ {\displaystyle{\displaystyle{\displaystyle\Sigma}}}  : sum : http://drmf.wmflabs.org/wiki/Definition:sum
p n subscript 𝑝 𝑛 {\displaystyle{\displaystyle{\displaystyle p_{n}}}}  : little q 𝑞 {\displaystyle{\displaystyle{\displaystyle q}}} -Laguerre / Wall polynomial : http://drmf.wmflabs.org/wiki/Definition:littleqLaguerre

Bibliography

Equation in Section 14.20 of KLS.

URL links

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