Deformations formelles des revetements sauvagement ramifies de courbes algebriques

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dc.creatorBertin, Jose
dc.creatorMezard, Ariane
dc.date1998-10-11
dc.date.accessioned2026-07-07T05:26:23Z
dc.date.available2026-07-07T05:26:23Z
dc.descriptionIn this paper we study formal moduli for wildly ramified Galois covering. We prove a local-global principle. We then focus on the infinitesimal deformations of the Z/pZ-covers. We explicitly compute a deformation of an automorphism of order p which implies a universal obstruction for p>2. By deforming Artin-Schreier equations we obtain a lower bound on the dimension of the local versal deformation ring. At last, by comparing the global versal deformation ring to the complete local ring in a point of a moduli space, we determine the dimensions of the global and local versal deformation ring.
dc.description46 pages
dc.identifierhttps://arxiv.org/abs/math/9810066
dc.identifierhttp://arxiv.org/abs/math/9810066
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/77534
dc.subjectAlgebraic Geometry
dc.subject18S80,14H,14D22,14H30
dc.titleDeformations formelles des revetements sauvagement ramifies de courbes algebriques
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