DLMF:25.11.E38 (Q7712)

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DLMF:25.11.E38
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    Statements

    Defining formula
    ∑ k = 1 ∞ ( n + k k ) ⁢ ζ ⁡ ( n + k + 1 , a ) ⁢ z k = ( - 1 ) n n ! ⁢ ( ψ ( n ) ⁡ ( a ) - ψ ( n ) ⁡ ( a - z ) ) , superscript subscript 𝑘 1 binomial 𝑛 𝑘 𝑘 Hurwitz-zeta 𝑛 𝑘 1 𝑎 superscript 𝑧 𝑘 superscript 1 𝑛 𝑛 digamma 𝑛 𝑎 digamma 𝑛 𝑎 𝑧 {\displaystyle{\displaystyle\sum_{k=1}^{\infty}\genfrac{(}{)}{0.0pt}{}{n+k}{k}% \zeta\left(n+k+1,a\right)z^{k}=\frac{(-1)^{n}}{n!}\left({\psi^{(n)}}\left(a% \right)-{\psi^{(n)}}\left(a-z\right)\right),}}
    0 references
    DLMF id
    DLMF:25.11.E38
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    constraint
    ℜ ⁡ a > 0 𝑎 0 {\displaystyle{\displaystyle\Re a>0}}
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    ℜ ⁡ a > 0 𝑎 0 {\displaystyle{\displaystyle\Re a>0}}
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    | z | < | a | 𝑧 𝑎 {\displaystyle{\displaystyle|z|<|a|}}
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    Symbols used
    Hurwitz zeta function
    Defining formula
    ζ ⁡ ( s , a ) Hurwitz-zeta 𝑠 𝑎 {\displaystyle{\displaystyle\zeta\left(\NVar{s},\NVar{a}\right)}}
    xml-id
    C25.S11.E1.m2aaldec
    0 references
    Q10754
    Defining formula
    ( m n ) binomial 𝑚 𝑛 {\displaystyle{\displaystyle\genfrac{(}{)}{0.0pt}{}{\NVar{m}}{\NVar{n}}}}
    xml-id
    C1.S2.SS1.m1abdec
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    psi (or digamma) function
    Defining formula
    ψ ⁡ ( z ) digamma 𝑧 {\displaystyle{\displaystyle\psi\left(\NVar{z}\right)}}
    xml-id
    C5.S2.E2.m2addec
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    Q10755
    Defining formula
    ! {\displaystyle{\displaystyle!}}
    xml-id
    introduction.Sx4.p1.t1.r15.m5aedec
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    Q10811
    Defining formula
    ℜ ⁡ absent {\displaystyle{\displaystyle\Re}}
    xml-id
    C1.S9.E2.m1audec
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    Q12150
    Defining formula
    k 𝑘 {\displaystyle{\displaystyle k}}
    xml-id
    C25.S1.XMD1.m1hdec
    0 references
     
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