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On the distribution of p α modulo one

Xiaodong Cao, Wenguang Zhai (1999)

Journal de théorie des nombres de Bordeaux

In this paper, we give a new upper-bound for the discrepancy D ( N ) : = sup 0 γ 0 | p / N p α γ 1 - π ( N ) γ | for the sequence ( p α ) , when 5 / 3 α > 3 and α 2 .

On the distribution of the Euler function of shifted smooth numbers

Stefanie S. Loiperdinger, Igor E. Shparlinski (2010)

Colloquium Mathematicae

We give asymptotic formulas for some average values of the Euler function on shifted smooth numbers. The result is based on various estimates on the distribution of smooth numbers in arithmetic progressions which are due to A. Granville and É. Fouvry & G. Tenenbaum.

On the distribution of the partial sum of Euler's totient function in residue classes

Youness Lamzouri, M. Tip Phaovibul, Alexandru Zaharescu (2011)

Colloquium Mathematicae

We investigate the distribution of Φ ( n ) = 1 + i = 1 φ ( i ) (which counts the number of Farey fractions of order n) in residue classes. While numerical computations suggest that Φ(n) is equidistributed modulo q if q is odd, and is equidistributed modulo the odd residue classes modulo q when q is even, we prove that the set of integers n such that Φ(n) lies in these residue classes has a positive lower density when q = 3,4. We also provide a simple proof, based on the Selberg-Delange method, of a result of T. Dence and...

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