General form of averaged Igusa conjecture for exponential sums

Let KK be a number field, let IOK[x1,,xn]\mathcal{I}\subset\mathcal{O}_K[x_1,\dots,x_n] be a non-zero ideal with IK(1)\mathcal{I}_K\neq(1), and let ZAOKnZ\subset\mathbb{A}^n_{\mathcal{O}_K} be a subscheme. For each positive integer rr, let EL,Z,I(r)(m)E_{L,Z,\mathcal{I}}^{(r)}(m) be the associated averaged exponential sum and let moiK,Z(r)(I)\operatorname{moi}_{K,Z}^{(r)}(\mathcal{I}) be the averaged motivic oscillation index. General averaged Igusa conjecture. There exist an integer MM, depending only on I\mathcal{I}, and a positive constant crc_r, depending only on I\mathcal{I} and rr, such that for all LL~K,ML\in\widetilde{\mathcal{L}}_{K,M} and all m2m\geq2,

EL,Z,I(r)(m)crmn+r1qLmmoiK,Z(r)(I).\left|E_{L,Z,\mathcal{I}}^{(r)}(m)\right|\leq c_r m^{n+r-1}q_L^{-m\operatorname{moi}_{K,Z}^{(r)}(\mathcal{I})}.

This conjecture is obtained by specializing the general polynomial conjecture to linear combinations of generators of an ideal. It is not resolved in the source.

Sources & referencesView supporting material

Primary source

Kien Huu Nguyen, “Exponential sums and motivic oscillation index of arbitrary ideals and their applications”, arXiv:2305.19732 (2025).

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