Derivator Six-Functor-Formalisms -- Construction II
Abstract
Starting from simple and necessary axioms on a (derivator enhanced) four-functor-formalism, we construct derivator six-functor-formalisms using compactifications. This works, for instance, for the stable homotopy categories of Morel-Voevodsky-Ayoub, and also for the classical setting of unbounded complexes of sheaves of Abelian groups on `nice' topological spaces. The formalism of derivator six-functor-formalisms elegantly encodes all isomorphisms between compositions of the six functors (and their compatibilities) and moreover it gives coherent enhancements over diagrams of correspondences. Such a formalism allows to extend six-functor-formalisms to stacks using (co)homological descent.
Cite
@article{arxiv.1902.03625,
title = {Derivator Six-Functor-Formalisms -- Construction II},
author = {Fritz Hörmann},
journal= {arXiv preprint arXiv:1902.03625},
year = {2022}
}
Comments
completely revised version now including the discussion of main examples