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HannsEwald (talk | contribs) m →Series representation: inserted absolute value into log log(x) to make formula valid for x < 1 |
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Line 46:
\operatorname{li}(x) =
\gamma
+ \ln |\ln x|
+ \sqrt{x} \sum_{n=1}^\infty
\left( \frac{ (-1)^{n-1} (\ln x)^n} {n! \, 2^{n-1}}
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