Gersten-type conjecture for henselian local rings of normal crossing varieties
Abstract
Let and be integers. Let be the henselization of the local ring of a scheme at a point . For a normal crossing variety over the spectrum of a field of positive characteristic , KSato defined an \'{e}tale logarithmic Hodge-Witt sheaf on the \'{e}tale site which agrees with in the case where is smooth over . In this paper, we prove the Gersten-type conjecture for \'{e}tale sheaves which satisfy some properties over . For example, and satisfy these properties where is the \'{e}tale sheaf of -th roots of unity for an integer which is prime to the characteristic of . Let be a discrete valuation ring of mixed characteristic and a semistable family over . Suppose that contains -th roots of unity. As an application of the Gersten-type conjecture for , we prove the relative version of the Gersten-type conjecture for the -adic \'{e}tale Tate twist over . Moreover, we prove a generalization of Artin's theorem about the Brauer groups.
Keywords
Cite
@article{arxiv.2402.18042,
title = {Gersten-type conjecture for henselian local rings of normal crossing varieties},
author = {Makoto Sakagaito},
journal= {arXiv preprint arXiv:2402.18042},
year = {2026}
}
Comments
75 pages, Abstract changed