Galoisgruppen über aufgeschlossenen reellen Funktionskörpern.
Gauss-Manin stratification and stratified fundamental group schemes
We define the zero-th Gauss-Manin stratification of a stratified bundle with respect to a smooth morphism and use it to study the homotopy sequence of stratified fundamental group schemes.
Geometric methods for cohomological invariants.
Groupe fondamental du complémentaire d'une courbe à points doubles ordinaires