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Three point covers with bad reduction
Authors:Stefan Wewers
Affiliation:Mathematisches Institut, Beringstr. 1, 53115 Bonn, Germany
Abstract:
We study Galois covers of the projective line branched at three points with bad reduction to characteristic $p$, under the condition that $p$ strictly divides the order of the Galois group. As an application of our results, we prove that the field of moduli of such a cover is at most tamely ramified at $p$.

Keywords:Three point cover   stable reduction   field of moduli
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