On the Symmetry of Arithmetical Functions

نویسنده

  • G. Coppola
چکیده

We study the symmetry in short intervals of arithmetic functions with non-negative exponential sums. 1. Introduction and statement of the results. We pursue the study of the symmetry in (almost all) short intervals of arithmetical functions f (see [C1]), where this time we give (non-trivial) results for a new class of such (real) f ; the key-property they have is a non-negative exponential sum (see Lemma 2), which is something we require, in order to get a kind of " majorant principle " ; this allows us to " smooth " our f into a " restricted " divisor function (see the Theorem), for which (see the Corollary) we apply non-trivial results (both from [C-S], on Acta Arithmetica, and [C2]). We need the following definitions. Here and in the sequel h → ∞ and h = o(N), if N → ∞.

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تاریخ انتشار 2009