Euler-Mascheroni constant
From specialfunctionswiki
$$\gamma = \lim_{n \rightarrow \infty} 1 + \dfrac{1}{2} + \ldots + \dfrac{1}{n}-\log(n) = 0.577215664901532$$
$$\gamma = \lim_{n \rightarrow \infty} 1 + \dfrac{1}{2} + \ldots + \dfrac{1}{n}-\log(n) = 0.577215664901532$$
