Transformation de Fourier homogene

Details Transformation de Fourier homogene Transformation de Fourier homogene

2002-07-16

arxiv.org/abs/math/0207129v1

Mathematics

Algebraic Geometry

plain tex, 25 pages, in French

Scientific paper

In their proof of the Drinfeld-Langlands correspondence, Frenkel, Gaitsgory and Vilonen make use of a geometric Fourier transformation. Therefore, they work either with l-adic sheaves in characteristic p>0, or with D-modules in characteristic 0. Actually, they only need to consider the Fourier transforms of homogeneous sheaves for which one expects a uniform geometric construction in any characteristic. In this note, we propose such a homogeneous geometric Fourier transformation. It extends the geometric Radon transformation which has been studied by Brylinski.

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