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math.NT2014★ 48 cited
On moments of twisted -functions
Valentin Blomer, Étienne Fouvry, Emmanuel Kowalski +2
We study the average of the product of the central values of two -functions of modular forms and twisted by Dirichlet characters to a large prime modulus . As our pri…
math.NT2014★ 28 cited
A study in sums of products
É. Fouvry, E. Kowalski, Ph. Michel
We give a general version of cancellation in exponential sums that arise as sums of products of trace functions satisfying a suitable independence condition related to the Goursat-…