DLMF:20.8.E1 (Q6830)

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Language	Label	Description	Also known as
English	DLMF:20.8.E1	No description defined

Statements

{\displaystyle{\displaystyle\frac{\theta_{2}\left(0,q\right)\theta_{3}\left(z,% q\right)\theta_{4}\left(z,q\right)}{\theta_{2}\left(z,q\right)}=2\sum_{n=-% \infty}^{\infty}\frac{(-1)^{n}q^{n^{2}}e^{i2nz}}{q^{-n}e^{-iz}+q^{n}e^{iz}}.}}

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DLMF:20.8.E1

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