DLMF:5.18.E2 (Q2189)

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Language	Label	Description	Also known as
English	DLMF:5.18.E2	No description defined

Statements

Defining formula

{\displaystyle{\displaystyle n\lxMathTweak{role=POSTFIX}{\@nonfactorial_{q}}=1% (1+q)\cdots(1+q+\dots+q^{n-1})=\left(q;q\right)_{n}(1-q)^{-n}.}}

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DLMF:5.18.E2

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Symbols defined

$$q$$ -factorial (as in $$n!_{q}$$ )

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