Kernel algebras and generalized Fourier-Mukai transforms

Details Kernel algebras and generalized Fourier-Mukai transforms Kernel algebras and generalized Fourier-Mukai transforms

2008-10-08

arxiv.org/abs/0810.1542v3

Mathematics

Algebraic Geometry

67 pages, v2: twisted sheaves and kernel algebras associated with 1-cocycles are defined in the more general situation of a gr

Scientific paper

We introduce and study kernel algebras, i.e., algebras in the category of sheaves on a square of a scheme, where the latter category is equipped with a monoidal structure via a natural convolution operation. We show that many interesting categories, such as D-modules, equivariant sheaves and their twisted versions, arise as categories of modules over kernel algebras. We develop the techniques of constructing derived equivalences between these module categories. As one application we generalize the results of math.AG/9901009 concerning modules over algebras of twisted differential operators on abelian varieties. As another application we recover and generalize the results of Laumon in alg-geom/9603004 concerning an analog of the Fourier transform for derived categories of quasicoherent sheaves on a dual pair of generalized 1-motives.

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