Let Kl(a, b; n) be the usual Kloosterman sum modulo n, with coefficients a and b. We give upper and lower bounds for the sum Sigma(nless than or equal tox) | Kl(1, 1; n)|/rootn, and for related sums, by using large sieve techniques and Deligne-Katz theory of exponential sums. Extensions to more general exponential sums of dimension one are also given.
机构:
St. Petersburg Department of the Steklov Mathematical Institute, St. PetersburgSt. Petersburg Department of the Steklov Mathematical Institute, St. Petersburg
机构:
St.Petersburg Department of V. A. Steklov Mathematical Institute of the Russian Academy of Sciences, St.PetersburgSt.Petersburg Department of V. A. Steklov Mathematical Institute of the Russian Academy of Sciences, St.Petersburg