Differential operators on toric varieties and Fourier transform

Details Differential operators on toric varieties and Fourier transform Differential operators on toric varieties and Fourier transform

2007-05-11

arxiv.org/abs/0705.1709v3

Mathematics

Algebraic Geometry

13 pages, 1 figure. Added results on higher cohomologies. Reference added in version 3

Scientific paper

We show that Fourier transforms on the Weyl algebras have a geometric counterpart in the framework of toric varieties, namely they induce isomorphisms between twisted rings of differential operators on regular toric varieties, whose fans are related to each other by reflections of one-dimensional cones. The simplest class of examples is provided by the toric varieties related by such reflections to projective spaces. It includes the blow-up at a point in affine space and resolution of singularities of varieties appearing in the study of the minimal orbit of sl(n+1).

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