Teichmüllerraum für total degenerierte Kurven.
The absolute anabelian geometry of canonical curves.
The equivariant fundamental group, uniformization of real algebraic curves, and global complex analytic coordinates on Teichmüller spaces
The fundamental group for the complement of Cayley's singularities.
The Galois structure of S-units
The Galois-module structure of the space of holomorphic differentials of a curve.
The geometry of the period mapping on cyclic covers of P1
The local lifting problem for actions of finite groups on curves
Let be an algebraically closed field of characteristic . We study obstructions to lifting to characteristic the faithful continuous action of a finite group on . To each such a theorem of Katz and Gabber associates an action of on a smooth projective curve over . We say that the KGB obstruction of vanishes if acts on a smooth projective curve in characteristic in such a way that and have the same genus for all subgroups . We determine for which the KGB obstruction...
The moduli space of curves of genus two covering elliptic curves.
The Monodromy of a Curve with Ordinary Double Points.
The monodromy of Weierstrass points.
The p-Rank of Artin-Schreier Curves.
The Prym variety for a cyclic unramified cover of a hyperelliptic Riemann surface.
The reduction of a double covering of a Mumford curve.
Théorie du corps de classes de Kato et revêtements abéliens de surfaces
L’auteur présente des applications élémentaires de la théorie du corps de classes de Kato et Parshin en dimensions 1 et 3 : calcul du conducteur d’une extension de Witt-Artin-Schreier d’un corps local de dimension 1, et étude des revêtements abéliens des surfaces.
Topologische Automorphismen in der konstruktiven Galoistheorie.