Louis Hugo Brewis

activity

20072016

collaborators

3 papers

math.AG2016

On the Jacobian conjecture in characteristic zero

Louis Hugo Brewis

We study the Jacobian conjecture for Keller maps $f : X_{0} := A^{n} \to Y_{0} := A^{n}$ in characteristic $0$ and attempt to prove it. We are quite aware of the fact th…

math.AG2008

Artin characters, Hurwitz trees and the lifting problem

Louis Hugo Brewis, Stefan Wewers

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 f…

math.AG2007

Liftable D_4-Covers

Louis Hugo Brewis

Let k be an algebraically closed field of characteristic p and let G be a subgroup of Aut(k[[t]]) be a faithful action on a local power series ring over k. Let R be a discrete valu…