Formula:KLS:14.25:02

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k = 0 q k 2 a k ( q ; q ) k ( a q ; q ) k V m ( a ) ( q - k ; q ) V n ( a ) ( q - k ; q ) = ( q ; q ) n a n ( a q ; q ) q n 2 δ m , n superscript subscript 𝑘 0 superscript 𝑞 superscript 𝑘 2 superscript 𝑎 𝑘 q-Pochhammer-symbol 𝑞 𝑞 𝑘 q-Pochhammer-symbol 𝑎 𝑞 𝑞 𝑘 q-Al-Salam-Carlitz-II-polynomial-V 𝑎 𝑚 superscript 𝑞 𝑘 𝑞 q-Al-Salam-Carlitz-II-polynomial-V 𝑎 𝑛 superscript 𝑞 𝑘 𝑞 q-Pochhammer-symbol 𝑞 𝑞 𝑛 superscript 𝑎 𝑛 q-Pochhammer-symbol 𝑎 𝑞 𝑞 superscript 𝑞 superscript 𝑛 2 Kronecker-delta 𝑚 𝑛 {\displaystyle{\displaystyle{\displaystyle\sum_{k=0}^{\infty}\frac{q^{k^{2}}a^% {k}}{\left(q;q\right)_{k}\left(aq;q\right)_{k}}V^{(a)}_{m}\!\left(q^{-k};q% \right)V^{(a)}_{n}\!\left(q^{-k};q\right){}=\frac{\left(q;q\right)_{n}a^{n}}{% \left(aq;q\right)_{\infty}q^{n^{2}}}\,\delta_{m,n}}}}

Constraint(s)

0 < a q < 1 0 𝑎 𝑞 1 {\displaystyle{\displaystyle{\displaystyle 0<aq<1}}}


Proof

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Symbols List

Σ Σ {\displaystyle{\displaystyle{\displaystyle\Sigma}}}  : sum : http://drmf.wmflabs.org/wiki/Definition:sum
( 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
V α ( n ) subscript superscript 𝑉 𝑛 𝛼 {\displaystyle{\displaystyle{\displaystyle V^{(n)}_{\alpha}}}}  : Al-Salam-Carlitz II polynomial : http://drmf.wmflabs.org/wiki/Definition:AlSalamCarlitzII
δ m , n subscript 𝛿 𝑚 𝑛 {\displaystyle{\displaystyle{\displaystyle\delta_{m,n}}}}  : Kronecker delta : http://dlmf.nist.gov/front/introduction#Sx4.p1.t1.r4

Bibliography

Equation in Section 14.25 of KLS.

URL links

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