Formula:DLMF:25.12:E12

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\Polylogarithm s @ z = Γ ( 1 - s ) ( ln 1 z ) s - 1 + n = 0 \RiemannZeta @ s - n ( ln z ) n n ! \Polylogarithm 𝑠 @ 𝑧 Euler-Gamma 1 𝑠 superscript 1 𝑧 𝑠 1 superscript subscript 𝑛 0 \RiemannZeta @ 𝑠 𝑛 superscript 𝑧 𝑛 𝑛 {\displaystyle{\displaystyle{\displaystyle\Polylogarithm{s}@{z}=\Gamma\left(1-% s\right)\left(\ln\frac{1}{z}\right)^{s-1}+\sum_{n=0}^{\infty}\RiemannZeta@{s-n% }\frac{(\ln z)^{n}}{n!}}}}

Constraint(s)

s 1 , 2 , 3 , 𝑠 1 2 3 {\displaystyle{\displaystyle{\displaystyle s\neq 1,2,3,\dots}}} &
| ln z | < 2 π 𝑧 2 {\displaystyle{\displaystyle{\displaystyle|\ln z|<2\pi}}}


Proof

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Symbols List

& : logical and
Li s subscript Li 𝑠 {\displaystyle{\displaystyle{\displaystyle\mathrm{Li}_{s}}}}  : polylogarithm : http://dlmf.nist.gov/25.12#E10
Γ Γ {\displaystyle{\displaystyle{\displaystyle\Gamma}}}  : Euler's gamma function : http://dlmf.nist.gov/5.2#E1
ln ln {\displaystyle{\displaystyle{\displaystyle\mathrm{ln}}}}  : principal branch of logarithm function : http://dlmf.nist.gov/4.2#E2
Σ Σ {\displaystyle{\displaystyle{\displaystyle\Sigma}}}  : sum : http://drmf.wmflabs.org/wiki/Definition:sum
ζ 𝜁 {\displaystyle{\displaystyle{\displaystyle\zeta}}}  : Riemann zeta function : http://dlmf.nist.gov/25.2#E1
π 𝜋 {\displaystyle{\displaystyle{\displaystyle\pi}}}  : ratio of a circle's circumference to its diameter : http://dlmf.nist.gov/5.19.E4

Bibliography

Equation (12), Section 25.12 of DLMF.

URL links

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