English

The local lifting problem for $(\mathbb{Z}/2\mathbb{Z})^3$

Algebraic Geometry 2024-01-10 v1 Number Theory

Abstract

Let kk be an algebraically closed field of characteristic 22. In this paper we describe the (Z/2Z)3(\mathbb{Z}/2\mathbb{Z})^3-actions on k[[z]]k[[z]] for which there is a discrete valuation ring RR, a finite extension of the ring of Witt vectors W(k)W(k), such that they can be lifted as a group of RR-automorphisms of R[[Z]]R[[Z]]. In fact the necessary and sufficient condition for such an action to lift involves only the conductor type of the corresponding extension.

Keywords

Cite

@article{arxiv.2401.03288,
  title  = {The local lifting problem for $(\mathbb{Z}/2\mathbb{Z})^3$},
  author = {Guillaume Pagot},
  journal= {arXiv preprint arXiv:2401.03288},
  year   = {2024}
}

Comments

30 pages, 7 figures

R2 v1 2026-06-28T14:10:17.068Z