DLMF:20.4.E9 (Q6764)

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Language	Label	Description	Also known as
English	DLMF:20.4.E9	No description defined

Statements

Defining formula

{\displaystyle{\displaystyle\frac{\theta_{2}''\left(0,q\right)}{\theta_{2}% \left(0,q\right)}=-1-8\sum_{n=1}^{\infty}\frac{q^{2n}}{(1+q^{2n})^{2}},}}

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DLMF:20.4.E9

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Defining formula

{\displaystyle{\displaystyle\theta_{\NVar{j}}\left(\NVar{z},\NVar{q}\right)}}

C20.S2.SS1.m2ahdec

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Defining formula

{\displaystyle{\displaystyle n}}

C20.S1.XMD2.m1edec

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Defining formula

{\displaystyle{\displaystyle q}}

C20.S1.XMD5.m1hdec

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Sitelinks

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