General form of averaged Igusa conjecture for exponential sums

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Let KK be a number field, let I⊂OK[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 Z⊂AOKnZ\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 moi⁡K,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 L∈L~K,ML\in\widetilde{\mathcal{L}}_{K,M} and all m≥2m\geq2,

∣EL,Z,I(r)(m)∣≤crmn+r−1qL−mmoi⁡K,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.

References

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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