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math.AG2012
Good reduction of three-point Galois covers
Andrew Obus
Michel Raynaud gave a criterion for a three-point G-cover f : Y \rightarrow X = P^1, defined over a p-adic field K, to have good reduction. In particular, if the order of a p-Sylow…
math.AG2012
Cyclic Extensions and the Local Lifting Problem
Andrew Obus, Stefan Wewers
The local Oort conjecture states that, if G is cyclic and k is an algebraically closed field of characteristic p, then all G-extensions of k[[t]] should lift to characteristic zero…