Abstract
Using the classical analysis resolution of singularities algorithm of [G4], we generalize the theorems of [G3] on R n sublevel set volumes and oscillatory integrals with real phase function to functions over an arbitrary local field of characteristic zero. The p-adic cases of our results provide new estimates for exponential sums as well as new bounds on how often a function f(x), such as a polynomial with integer coefficients, is divisible by various powers of a prime p when x is an integer. Unlike many papers on such exponential sums and p-adic oscillatory integrals, we do not require the Newton polyhedron of the phase to be nondegenerate, but rather as in [G3] we have conditions on the maximum order of the zeroes of certain polynomials corresponding to the compact faces of this Newton polyhedron.
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This research was supported in part by NSF grants DMS-0919713 and DMS-1001070.
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Greenblatt, M. Applications of an elementary resolution of singularities algorithm to exponential sums and congruences modulo p n . Isr. J. Math. 212, 315–335 (2016). https://doi.org/10.1007/s11856-016-1288-7
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DOI: https://doi.org/10.1007/s11856-016-1288-7