DLMF:17.7.E20 (Q5416)

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DLMF:17.7.E20
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    Defining formula
    ∑ k = 0 n 1 - a ⁢ p k ⁢ q k 1 - a ⁢ ( a ; p ) k ⁢ ( c ; q ) k ( q ; q ) k ⁢ ( a ⁢ p / c ; p ) k ⁢ c - k = ( a ⁢ p ; p ) n ⁢ ( c ⁢ q ; q ) n ( q ; q ) n ⁢ ( a ⁢ p / c ; p ) n ⁢ c - n . superscript subscript 𝑘 0 𝑛 1 𝑎 superscript 𝑝 𝑘 superscript 𝑞 𝑘 1 𝑎 q-Pochhammer-symbol 𝑎 𝑝 𝑘 q-Pochhammer-symbol 𝑐 𝑞 𝑘 q-Pochhammer-symbol 𝑞 𝑞 𝑘 q-Pochhammer-symbol 𝑎 𝑝 𝑐 𝑝 𝑘 superscript 𝑐 𝑘 q-Pochhammer-symbol 𝑎 𝑝 𝑝 𝑛 q-Pochhammer-symbol 𝑐 𝑞 𝑞 𝑛 q-Pochhammer-symbol 𝑞 𝑞 𝑛 q-Pochhammer-symbol 𝑎 𝑝 𝑐 𝑝 𝑛 superscript 𝑐 𝑛 {\displaystyle{\displaystyle\sum_{k=0}^{n}\frac{1-ap^{k}q^{k}}{1-a}\frac{\left% (a;p\right)_{k}\left(c;q\right)_{k}}{\left(q;q\right)_{k}\left(ap/c;p\right)_{% k}}c^{-k}=\frac{\left(ap;p\right)_{n}\left(cq;q\right)_{n}}{\left(q;q\right)_{% n}\left(ap/c;p\right)_{n}}c^{-n}.}}
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    DLMF id
    DLMF:17.7.E20
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