On the universal extensions in Tannakian categories
Algebraic Geometry
2023-07-25 v3 Number Theory
Abstract
We use the notion of universal extension in a linear abelian category to study extensions of variations of mixed Hodge structure and convergent and overconvergent isocrystals. The results we obtain apply, for example, to prove the exactness of some homotopy sequences for these categories and to study -able isocrystals.
Cite
@article{arxiv.2009.14170,
title = {On the universal extensions in Tannakian categories},
author = {Marco D'Addezio and Hélène Esnault},
journal= {arXiv preprint arXiv:2009.14170},
year = {2023}
}
Comments
19 pages; added reference to [And20]