DLMF:5.16.E2 (Q2179)

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Language	Label	Description	Also known as
English	DLMF:5.16.E2	No description defined

Statements

Defining formula

{\displaystyle{\displaystyle\sum_{k=1}^{\infty}\frac{1}{k}\psi'\left(k+1\right% )=\zeta\left(3\right)=-\frac{1}{2}\psi''\left(1\right).}}

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DLMF:5.16.E2

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Riemann zeta function

Defining formula

{\displaystyle{\displaystyle\zeta\left(\NVar{s}\right)}}

C25.S2.E1.m2adec

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psi (or digamma) function

Defining formula

{\displaystyle{\displaystyle\psi\left(\NVar{z}\right)}}

C5.S2.E2.m2aadec

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Defining formula

{\displaystyle{\displaystyle k}}

C5.S1.XMD4.m1adec

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Sitelinks

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