Mertens function
= Mertens function
{c}
{title2=$M(x)$}
{wiki}
The Mertens function is the summatory <Möbius function>
$$
M(x)=\sum_{n\leq x}\mu(n).
$$
= Mertens function
{c}
{title2=$M(x)$}
{wiki}
The Mertens function is the summatory <Möbius function>
$$
M(x)=\sum_{n\leq x}\mu(n).
$$