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On the mean value of the mixed exponential sums with Dirichlet characters and general Gauss sum

Yongguang Du, Huaning Liu (2013)

Czechoslovak Mathematical Journal

The main purpose of the paper is to study, using the analytic method and the property of the Ramanujan’s sum, the computational problem of the mean value of the mixed exponential sums with Dirichlet characters and general Gauss sum. For integers m , n , k , q , with k 1 and q 3 , and Dirichlet characters χ , χ ¯ modulo q we define a mixed exponential sum C ( m , n ; k ; χ ; χ ¯ ; q ) = a = 1 q w i d t h 0 p t h e i g h t 1 e m ' χ ( a ) G k ( a , χ ¯ ) e m a k + n a k ¯ q , with Dirichlet character χ and general Gauss sum G k ( a , χ ¯ ) as coefficient, where ' denotes the summation over all a such that ( a , q ) = 1 , a a ¯ 1 mod q and e ( y ) = e 2 π i y . We mean value of m χ χ ¯ | C ( m , n ; k ; χ ; χ ¯ ; q ) | 4 , and...

On the mean values of Dedekind sums

Wenpeng Zhang (1996)

Journal de théorie des nombres de Bordeaux

In this paper we study the asymptotic behavior of the mean value of Dedekind sums, and give a sharper asymptotic formula.

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