English

$p$-adic tame Tate twists

Algebraic Geometry 2024-07-12 v1

Abstract

Recently, H\"ubner-Schmidt defined the tame site of a scheme. We define pp-adic tame Tate twists in the tame topology and prove some first properties. We establish a framework analogous to the Beilinson-Lichtenbaum conjectures in the tame topology for pp-adic tame Tate twists and tame logarithmic deRham-Witt sheaves. Both only differ from their \'etale counterpart in cohomological degrees above the weight. These cohomology groups can be analysed using the Gersten conjecture which, at least conjecturally, has a nice shape in the tame topology. We prove the Gersten conjecture for tame logarithmic deRham-Witt sheaves for curves in positive characteristic and note that the conjecture in arbitrary dimension would follow from strict A1\mathbb{A}^1-invariance.

Keywords

Cite

@article{arxiv.2407.07979,
  title  = {$p$-adic tame Tate twists},
  author = {Morten Lüders},
  journal= {arXiv preprint arXiv:2407.07979},
  year   = {2024}
}

Comments

21 pages

R2 v1 2026-06-28T17:36:20.672Z