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The Weil bound for generalized Kloosterman sums of half-integral weight

  • Nickolas Andersen EMAIL logo , Gradin Anderson und Amy Woodall
Veröffentlicht/Copyright: 26. Juni 2024

Abstract

Let L be an even lattice of odd rank with discriminant group L / L , and let α , β L / L . We prove the Weil bound for the Kloosterman sums S α , β ( m , n , c ) of half-integral weight for the Weil Representation attached to L. We obtain this bound by proving an identity that relates a divisor sum of Kloosterman sums to a sparse exponential sum. This identity generalizes Kohnen’s identity for plus space Kloosterman sums with the theta multiplier system.

MSC 2020: 11L05; 11L07

Communicated by Jan Bruinier


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Received: 2023-10-17
Revised: 2024-05-01
Published Online: 2024-06-26
Published in Print: 2025-02-01

© 2024 Walter de Gruyter GmbH, Berlin/Boston

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