Sommaire du Fascicule no. 1

A character approach to Looijenga's invariant theory for generalized root systems
Families of quintic surfaces and curves
Geometric invariant theory for general algebraic groups
A classification of the nilpotent triangular matrices

Sommaire du Fascicule no. 2

The period map for hypersurface sections of high degree of an arbitrary variety
Curves of g d 1, s
Cohomologie, L-groupes et fonctorialité
Decompositions of manifolds into codimension one submanifolds
Stickelberger elements in function fields
Deformations of transversely holomorphic flows on spheres and deformations of hopf manifolds
Sur la ramification des extensions de Lie

Sommaire du Fascicule no. 3

Absolutely extremal points in minimal flows
A characterization of quasi-homogeneous Gorenstein surface singularities
Borel’s theorem for C ∞ -functions on a non-archimedean valued field
Remarks on chain conditions in products
Sizes of quotient spaces of certain function algebras on topological semigroups
Poles of a local zeta function and Newton polygons
Duality theorems for Γ-extensions of algebraic number fields
Plongements kummériens dans les ℤ p -extensions
Erratum