Source: cirosantilli/logarithmic-integral-function
= Logarithmic integral function
{title2=$li(x) = \int _{0}^{x}{\frac {dt}{\ln t}}$}
{wiki}
= Logarithm integral
{synonym}
{title2}
Sample software implementations:
* <SymPy>: <python/sympy_cheat/logarithm_integral.py>{file}