Formula:KLS:01.08:11

<< Formula:KLS:01.08:08

formula in The q-shifted factorial

Formula:KLS:01.08:12 >>

${\displaystyle{\displaystyle{\displaystyle\left(a;q\right)_{\lambda}=\frac{\left(a;q\right)_{\infty}}{\left(aq^{\lambda};q\right)_{\infty}}}}}$

Constraint(s)

${\displaystyle{\displaystyle{\displaystyle 0<|q|<1}}}$

Substitution(s)

${\displaystyle{\displaystyle{\displaystyle\left(a;q\right)_{\infty}=\prod_{k=0}^{\infty}(1-aq^{k})=\left(a;q^{2}\right)_{\infty}\left(aq;q^{2}\right)_{\infty}}}}$

Proof

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Symbols List

${\displaystyle{\displaystyle{\displaystyle(a;q)_{n}}}}$ : ${\displaystyle{\displaystyle{\displaystyle q}}}$-Pochhammer symbol : http://dlmf.nist.gov/5.18#i http://dlmf.nist.gov/17.2#SS1.p1
${\displaystyle{\displaystyle{\displaystyle\Pi}}}$ : product : http://drmf.wmflabs.org/wiki/Definition:prod

Bibliography

Equation in Section 1.8 of KLS.

URL links

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<< Formula:KLS:01.08:08

formula in The q-shifted factorial

Formula:KLS:01.08:12 >>