Convolution structures and arithmetic cohomology

Details Convolution structures and arithmetic cohomology Convolution structures and arithmetic cohomology

1998-07-27

arxiv.org/abs/math/9807151v3

Mathematics

Algebraic Geometry

Extra section on harmonic analysis included to make the paper more accessible for arithmetic geometers. Also, the ghost-spaces

Scientific paper

In this paper we construct arithmetic analogs of the Riemann-Roch theorem and Serre's duality for line bundles. This improves on the works of Tate and van der Geer - Schoof. We define $H^0(L)$ and $H^1(L)$ as some convolution of measures structures. The $H^1$ is defined by a procedure very similar to the usual Cech cohomology. We get Serre's duality as Pontryagin duality of convolution structures. We get separately Riemann-Roch formula and Serre's duality. Instead of using the Poisson summation formula, we basically reprove it. The whole theory is pretty much parallel to the geometric case.

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