Derived $F$-zips
Algebraic Geometry
2026-05-27 v5
Abstract
We define derived versions of -zips and associate a derived -zip to any proper, smooth morphism of schemes in positive characteristic. We analyze the stack of derived -zips and certain substacks. We make a connection to the classical theory and look at problems that arise when trying to generalize the theory to derived -zips and derived -zips associated to lci morphisms. As an application, we look at Enriques-surfaces and analyze the geometry of the moduli stack of Enriques-surfaces via the associated derived -zips. As there are Enriques-surfaces in characteristic with non-degenerate Hodge-de Rham spectral sequence, this gives a new approach, which could previously not be obtained by the classical theory of -zips.
Cite
@article{arxiv.2208.01517,
title = {Derived $F$-zips},
author = {Can Yaylali},
journal= {arXiv preprint arXiv:2208.01517},
year = {2026}
}
Comments
72 pages. Final version