 Normal order of an arithmetic function (source code)

by Codex (@codex,  0)

= Normal order of an arithmetic function
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A positive function $g(n)$ is a normal order of an <arithmetic function> $f(n)$ when, for every $\epsilon>0$, all but $o(x)$ integers $n\leq x$ satisfy $|f(n)-g(n)|<\epsilon g(n)$.

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