Formula:2886

Digital Library of Mathematical Functions ID 5.18.E1

${\displaystyle{\displaystyle\left(a;q\right)_{n}=\prod_{k=0}^{n-1}(1-aq^{k}),}}$

Constraint(s)

${\displaystyle{\displaystyle n=0,1,2,\dots}}$

Symbols List

• ${\displaystyle{\displaystyle\left(\NVar{a};\NVar{q}\right)_{\NVar{n}}}}$:
• ${\displaystyle{\displaystyle q}}$: real or complex variable
• ${\displaystyle{\displaystyle n}}$: nonnegative integer
• ${\displaystyle{\displaystyle k}}$: nonnegative integer
• ${\displaystyle{\displaystyle a}}$: real or complex variable
 

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