P. Leonetti

activity

20122026

most citedOn the notions of upper and lower density

20 citations · 109 across the 55 of their papers we have counts for

collaborators

Showing 2014Show all

2 papers · 1 filter

math.NT2014

Large gaps in the image of the Euler's function

Paolo Leonetti

The aim of this note is to provide an upper bound of the number of positive integers $\leq x$ which can be written as $φ (n)$ for some positive integer $n$ , where $φ$ stands for the…

math.NT2014

Sums of Multivariate Polynomials in Finite Subgroups

Paolo Leonetti, Andrea Marino

Let $R$ be a commutative ring, $f \in R [X_{1}, \dots, X_{k}]$ a multivariate polynomial, and $G$ a finite subgroup of the group of units of $R$ satisfying a certain constraint, which al…