Formal deformation of curves with group scheme action

Details Formal deformation of curves with group scheme action Formal deformation of curves with group scheme action

2002-12-10

arxiv.org/abs/math/0212145v2

Mathematics

Algebraic Geometry

44 pages, revised version

Scientific paper

We study equivariant deformations of singular curves with an action of a
finite flat group scheme, using a simplified version of Illusie's equivariant
cotangent complex. We apply these methods in a special case which is relevant
for the study of the stable reduction of three point covers.

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