Greenberg algebras and ramified Witt vectors
Algebraic Geometry
2020-03-04 v2 Number Theory
Abstract
Let O be a complete discrete valuation ring of mixed characteristic and with finite residue field k. We study a natural morphism between the Greenberg algebra of O and the special fiber of the scheme of ramified Witt vectors over O. It is a universal homeomorphism with pro-infinitesimal kernel that can be explicitly described in some cases.
Keywords
Cite
@article{arxiv.1805.08049,
title = {Greenberg algebras and ramified Witt vectors},
author = {Alessandra Bertapelle and Maurizio Candilera},
journal= {arXiv preprint arXiv:1805.08049},
year = {2020}
}
Comments
We improved some results. 19 pages