Issue no. 1 Table of Contents

A new look at classical mechanics of constrained systems
Espaces de Sobolev non isotropes, à poids et problèmes de Cauchy quasi-linéaires sur un conoïde caractéristique
Gauge symmetries of an extended phase space for Yang-Mills and Dirac fields
Stability of the densities of invariant measures for piecewise affine expanding non-renormalizable maps

Issue no. 2 Table of Contents

Large volume asymptotics of brownian integrals and orbital magnetism
Stochastic bosonization for a d≥3 Fermi system
Stochastic bosonization for an interacting d≥3 Fermi system
Inverse scattering theory for Dirac operators

Issue no. 3 Table of Contents

Deux applications de la géométrie locale des diffiétés
Contact transformations in Wheeler-Feynman electrodynamics
Uniform Finsler Hadamard manifolds

Issue no. 4 Table of Contents

A duality between Schrödinger operators on graphs and certain Jacobi matrices
Reaction-diffusion systems with prescribed large time behaviour
Minimizing Oseen-Frank energy for nematic liquid crystals : algorithms and numerical results