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math.NT2025

On local laws for the number of small prime factors

Gérald Tenenbaum

Investigating a question of Alladi, we describe the local distribution of small prime factors of integers, with emphasis on the transition phase occurring for certain values of the…

math.NT2025

Moyennes effectives de fonctions multiplicatives complexes

Gérald Tenenbaum

We establish effective mean-value estimates for a wide class of multiplicative arithmetic functions, thereby providing (essentially optimal) quantitative versions of Wirsing's clas…

math.NT2025

Remarks on the Selberg--Delange method

Régis de la Bretèche, Gérald Tenenbaum

Let be a complex number and let be a multiplicative arithmetic function whose Dirichlet series takes the form , where is associated to a multi…

math.NT2025

Note on a conjecture of Hildebrand regarding friable integers

Régis de la Bretèche, Gérald Tenenbaum

Hildebrand proved that the smooth approximation for the number of -friable integers not exceeding holds for under the Riemann hypothes…

math.NT2024

Friable averages of complex arithmetic functions

Régis de la Bretèche, Gérald Tenenbaum

We evaluate friable averages of arithmetic functions whose Dirichlet series is analytically close to some complex power of the Riemann zeta function. We obtain asymptotic expansion…

math.NT2024

Friable averages of oscillating multiplicative functions

Régis de la Bretèche, Gérald Tenenbaum

We evaluate friable averages of arithmetic functions whose Dirichlet series is analytically close to some negative power of the Riemann zeta function. We obtain asymptotic expansio…