Short character sums for composite moduli
Short character sums for composite moduli
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复合模数的短字符和
DOI:
10.1007/s11854-014-0012-y
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发表时间:
2011
期刊:
影响因子:
--
通讯作者:
Mei
中科院分区:
文献类型:
--
作者:
Mei
We establish new estimates on short character sums for arbitrary composite moduli with small prime factors. Our main result improves on the Graham-Ringrose bound for square-free moduli and also on the result due to Gallagher and Iwaniec when the core q′ = Πp|qp of the modulus q satisfies log q′ ∼ log q. Some applications to zero free regions of Dirichlet L-functions and the Pólya and Vinogradov inequalities are indicated.