Lifts of points on curves and exponential sums

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We give bounds for exponential sums over curves defined over Galois rings. We first define summation subsets as the images of lifts of points from affine opens of the reduced curve, and we give bounds for the degrees of their coordinate functions. Then we get bounds for exponential sums, extending results of Kumar et al., Winnie Li over the projective line, and Voloch Walker over elliptic and $C_{ab}$ curves.
19 pages, latex2e

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Number Theory, Algebraic Geometry

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http://salesiana.dossiersoluciones.com/handle/123456789/63390

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/0202206
 http://arxiv.org/abs/math/0202206

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arXiv