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Formal deformations of wildly ramified coverings of algebraic curves. (Déformations formelles des revêtements sauvagement ramifiés de courbes algébriques.) (French) Zbl 0993.14014

The authors study the formal moduli of wildly ramified Galois coverings. They determine the dimensions of the global and local versal deformation rings.
Reviewer: A.Dimca (Bordeaux)

MSC:

14H30 Coverings of curves, fundamental group
14E20 Coverings in algebraic geometry
14D15 Formal methods and deformations in algebraic geometry