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Multiplicative functions dictated by Artin symbols

Robert J. Lemke Oliver — 2013

Acta Arithmetica

Granville and Soundararajan have recently suggested that a general study of multiplicative functions could form the basis of analytic number theory without zeros of L-functions; this is the so-called pretentious view of analytic number theory. Here we study multiplicative functions which arise from the arithmetic of number fields. For each finite Galois extension K/ℚ, we construct a natural class K of completely multiplicative functions whose values are dictated by Artin symbols, and we show that...

On the counting function for the generalized Niven numbers

Ryan DailedaJessica JouRobert Lemke-OliverElizabeth RossolimoEnrique Treviño — 2009

Journal de Théorie des Nombres de Bordeaux

Given an integer base q 2 and a completely q -additive arithmetic function f taking integer values, we deduce an asymptotic expression for the counting function N f ( x ) = # 0 n < x | f ( n ) n under a mild restriction on the values of f . When f = s q , the base q sum of digits function, the integers counted by N f are the so-called base q Niven numbers, and our result provides a generalization of the asymptotic known in that case.

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