On the action of algebraic correspondences on weight spectral sequences

Details On the action of algebraic correspondences on weight spectral sequences On the action of algebraic correspondences on weight spectral sequences

2011-09-10

arxiv.org/abs/1109.2208v1

Mathematics

Number Theory

14 pages

Scientific paper

In a work of T. Saito, the action of algebraic correspondences on the etale cohomology of varieties over local fields with semistable reduction is related to correspondences on smaller strata via weight spectral sequences. We give an intersection theoretic construction of these correspondences. Under a finiteness condition this enables us to compute them without involving the blow-ups of products, and prove their compatibility with compositions. These features are essential for the application to Shimura varieties.

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