Content deleted Content added
m style (shoud we write ln x or ln (x) ?--) |
No edit summary |
||
Line 27:
:<math> {\rm li} (e^{u}) = \gamma + \ln \left| (u) \right| + \sum_{n=1}^{\infty} {u^{n}\over n \cdot n!} \quad {\rm for} \; u \ne 0 \; , </math>
where γ ≈ 0.57721 56649 01532 ... is the [[Euler-Mascheroni gamma constant]]. The function li(''x'') has a single positive zero; it occurs at ''x'' ≈ 1.45136 92348 ...; this number is known as the
| |||