%0 Journal Article
%T Artin characters, Hurwitz trees and the lifting problem
%A Louis Hugo Brewis
%A Stefan Wewers
%J Mathematics
%D 2008
%I arXiv
%X We study finite groups of automorphisms of the $p$-adic open disk. In particular, we generalize results of Green, Matignon and Henrio from cyclic groups of order $p$ to arbitrary finite groups. As an application, we produce a counterexample to a question of Chinburg, Guralnick and Harbater, concerning the local lifting problem for generalized quaternion groups.
%U http://arxiv.org/abs/0810.3603v3