DLMF:5.11.E2 (Q2118)

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DLMF:5.11.E2
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    Defining formula
    ψ ⁡ ( z ) ∼ ln ⁡ z - 1 2 ⁢ z - ∑ k = 1 ∞ B 2 ⁢ k 2 ⁢ k ⁢ z 2 ⁢ k . asymptotic-expansion digamma 𝑧 𝑧 1 2 𝑧 superscript subscript 𝑘 1 Bernoulli-number-B 2 𝑘 2 𝑘 superscript 𝑧 2 𝑘 {\displaystyle{\displaystyle\psi\left(z\right)\sim\ln z-\frac{1}{2z}-\sum_{k=1% }^{\infty}\frac{B_{2k}}{2kz^{2k}}.}}
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    DLMF id
    DLMF:5.11.E2
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