English

Fourier transform of algebraic measures

Algebraic Geometry 2014-09-22 v2

Abstract

These are notes of a talk based on the work arXiv:1212.3630 joint with A. Aizenbud. Let V be a finite-dimensional vector space over a local field F of characteristic 0. Let f be a function on V of the form f(x)=ψ(P(x))f(x)= \psi (P(x)), where P is a polynomial on V and ψ\psi is a nontrivial additive character of F. Then it is clear that the Fourier transform of f is well-defined as a distribution on VV^*. Due to J.Bernstein, Hrushovski-Kazhdan, and Cluckers-Loeser, it is known that the Fourier transform is smooth on a non-empty Zariski-open conic subset of VV^*. The goal of these notes is to sketch a proof of this result (and some related ones), which is very simple modulo resolution of singularities (the existing proofs use D-module theory in the Archimedean case and model theory in the non-Archimedian one).

Keywords

Cite

@article{arxiv.1303.0576,
  title  = {Fourier transform of algebraic measures},
  author = {Vladimir Drinfeld},
  journal= {arXiv preprint arXiv:1303.0576},
  year   = {2014}
}

Comments

Submitted to Proceedings of the conference in honour of Gerard Laumon's 60th birthday

R2 v1 2026-06-21T23:35:53.429Z