Logarithmic integral function: Difference between revisions

Revision as of 10:10, 21 September 2018

Revision as of 22:48, 16 December 2018

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\quad \text{ for } u \ne 0 \; , </math>

where γ ≈ 0.57721 56649 01532 ... {{OEIS2C|id=A001620}} is the [[Euler–Mascheroni gamma constant]]. A more rapidly convergent series due to [[Srinivasa Ramanujan|Ramanujan]] <ref>{{MathWorld | urlname=LogarithmicIntegral | title=Logarithmic Integral}}</ref> is

:<math>