https://doi.org/10.71352/ac.54.295
The ring of arithmetical functions in the rational domain
Abstract.
The arithmetical functions with rational argument are interpreted as sums of weighted divisors:
$$
f(r)=\sum_{d|r}w(d).
$$
The logarithmic density of subsets of rational numbers is introduced. It is proved, that if
\( w(d)\geqslant 0\), then asymptotic
logarithmic density of the set \(\{r: f(r)\geqslant z\}\) exists.
