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WEIGHT SPECTRAL SEQUENCES AND INDEPENDENCE OF $\ell$

Published online by Cambridge University Press:  16 September 2003

Takeshi Saito
Affiliation:
Department of Mathematical Sciences, University of Tokyo, Tokyo 153-8914, Japan (t-saito@ms.u-tokyo.ac.jp)

Abstract

For a variety over a local field, we show that the alternating sum of the traces of the composition of the actions of an element of the Weil group and an algebraic correspondence on the $\ell$-adic etale cohomology is independent of $\ell$. We prove the independence by establishing basic properties of weight spectral sequences.

AMS 2000 Mathematics subject classification: Primary 14G20. Secondary 11G25

Type
Research Article
Copyright
2003 Cambridge University Press

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