Sommaire du Fascicule no. 1

On the Joseph-small additivity principle for goldie ranks. A study on extensions of noetherian rings with applications to enveloping algebras
A Kummer criterion for imaginary quadratic fields
Sur la résolubilité locale des équations d'Einstein
Sur la topologie des surfaces affines réglées
Abelian closure in soluble Lie rings
Estimates of the first eigenvalue of a big cup domain of a 2-sphere

Sommaire du Fascicule no. 2

Finite determinacy and topological triviality. II : sufficient conditions and topological stability
Higher jacobians and cycles on abelian varieties
The irreducibility of compositions of linear polynomials over a finite field
An L 2 -isolation theorem for Yang-Mills fields
An L 2 -isolation theorem for Yang-Mills fields over complete manifolds
Generic maps and modules
On isospectral deformations of riemannian metrics. II
A note on Enriques' surfaces in characteristic 2
Glued convexity spaces, frames and graphs
Modular curves and unramified extensions of number fields

Sommaire du Fascicule no. 3

Splitting theorems of riemannian manifolds
Vector bundles on the cone over a curve
Zero cycles on algebraic varieties in nonzero characteristic : Rojtman's theorem
On the equation ax n -by n =c
Elliptic fibres on Enriques surfaces
An inversion formula for weighted orbital integrals
An asymptotic series expansion of the multidimensional renewal measure
Sequences with small discrepancy relative to n events
On the volume of unit balls in Banach spaces