The passage among the subcategories of weakly approximable triangulated categories
Abstract
In this article we prove that all the inclusions between the 'classical' and naturally defined full triangulated subcategories of a weakly approximable triangulated category are intrinsic (in one case under a technical condition). This extends all the existing results about subcategories of weakly approximable triangulated categories. Together with a forthcoming paper about uniqueness of enhancements, our result allows us to generalize a celebrated theorem by Rickard which asserts that if and are left coherent rings, then a derived equivalence of and is "independent of the decorations". That is, if and are equivalent as triangulated categories for some choice of decorations and , then they are equivalent for every choice of decorations. But our theorem is much more general, and applies also to quasi-compact and quasi-separated schemes -- even to the relative version, in which the derived categories consist of complexes with cohomology supported on a given closed subscheme with quasi-compact complement.
Keywords
Cite
@article{arxiv.2402.04605,
title = {The passage among the subcategories of weakly approximable triangulated categories},
author = {Alberto Canonaco and Christian Haesemeyer and Amnon Neeman and Paolo Stellari},
journal= {arXiv preprint arXiv:2402.04605},
year = {2024}
}
Comments
Main paper by Alberto Canonaco, Amnon Neeman and Paolo Stellari with an appendix by Christian Haesemeyer. 65 pages