The localization spectral sequence in the motivic setting

Abstract

We construct and study a motivic lift of a spectral sequence associated to a stratified scheme, recently discovered by Petersen in the context of mixed Hodge theory and $\ell$-adic Galois representations. The original spectral sequence expresses the compactly supported cohomology of an open stratum in terms of the compactly supported cohomology of the closures of strata and the combinatorics of the poset underlying the stratification. Some of its special cases are classical tools in the study of arrangements of subvarieties and configuration spaces. Our motivic lift lives in the triangulated category of étale motives and takes the shape of a Postnikov system. We describe its connecting morphisms and study some of its functoriality properties.

Accepted version. Minor changes

References in corpus (5)

• Triangulated categories of mixed motives
• Derivators, pointed derivators, and stable derivators
• A spectral sequence for stratified spaces and configuration spaces of points
• Cohomology of abelian arrangements
• Relative Artin motives and the reductive Borel-Serre compactification of a locally symmetric variety