Higher displays arising from filtered de Rham-Witt complexes
Algebraic Geometry
2020-06-25 v2 Number Theory
Abstract
For a smooth projective scheme over a ring on which is nilpotent that meets some general assumptions we prove that the crystalline cohomology is equipped with the structure of a higher display which is a relative version of Fontaine's strongly divisible lattices. Frobenius-divisibilty is induced by the Nygaard filtration on the relative de Rham-Witt complex. For a nilpotent PD-thickening we also consider the associated relative display and can describe it explicitly by a relative version of the Nygaard filtration on the de Rham-Witt complex associated to a lifting of over . We prove that there is a crystal of relative displays if moreover the mod reduction of has a smooth and versal deformation space.
Cite
@article{arxiv.1711.09940,
title = {Higher displays arising from filtered de Rham-Witt complexes},
author = {Oliver Gregory and Andreas Langer},
journal= {arXiv preprint arXiv:1711.09940},
year = {2020}
}
Comments
19 pages