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Three point covers with bad reduction

Stefan Wewers
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Abstract

We study Galois covers of the projective line branched at three points with bad reduction to characteristic p, under the condition that p exactly 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.

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Stefan Wewers. 2003-01-10. Three point covers with bad reduction. https://arxiv.org/abs/math/0205026

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