DLMF:26.16.E1 (Q7981)

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DLMF:26.16.E1
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    Statements

    Defining formula
    [ a 1 + a 2 + ⋯ + a n a 1 , a 2 , … , a n ] q = ∏ k = 1 n - 1 [ a k + a k + 1 + ⋯ + a n a k ] q , q-multinomial subscript 𝑎 1 subscript 𝑎 2 ⋯ subscript 𝑎 𝑛 subscript 𝑎 1 subscript 𝑎 2 … subscript 𝑎 𝑛 𝑞 superscript subscript product 𝑘 1 𝑛 1 q-binomial subscript 𝑎 𝑘 subscript 𝑎 𝑘 1 ⋯ subscript 𝑎 𝑛 subscript 𝑎 𝑘 𝑞 {\displaystyle{\displaystyle\genfrac{[}{]}{0.0pt}{}{a_{1}+a_{2}+\cdots+a_{n}}{% a_{1},a_{2},\ldots,a_{n}}_{q}=\prod_{k=1}^{n-1}\genfrac{[}{]}{0.0pt}{}{a_{k}+a% _{k+1}+\cdots+a_{n}}{a_{k}}_{q},}}
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    DLMF id
    DLMF:26.16.E1
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