Euler--Mascheroni constant (source code)

= Euler--Mascheroni constant
{c}
{title2=$\gamma$}
{wiki=Euler's_constant}

= Euler's constant
{c}
{synonym}

The Euler--Mascheroni constant is
$$
\gamma=\lim_{n\to\infty}\left(\sum_{k=1}^n\frac1k-\log n\right).
$$