Issue no. 1 Table of Contents

Expansion of inhomogenizations of all the classical Lie algebras to classical Lie algebras
Continuous bases for unitary irreducible representations of SU(1,1)
Fields on a homogeneous space of the Poincaré group
Induced representations of the (1+4) de Sitter group in an angular momentum basis and the decomposition of these representations with respect to representations of the Lorentz group
Model hamiltonian for low energy baryon pseudo-scalar meson scattering

Issue no. 2 Table of Contents

A class of solvable Lie groups and their relation to the canonical formalism
A spectrum generating nilpotent group for the relativistic free particle
The irreducible ray representations of the full inhomogeneous Galilei group
On the decomposition of the tensorial product of two representations of the Poincaré group - Case with at least one imaginary mass

Issue no. 3 Table of Contents

On a certain class of semi-simple subalgebras of a semi-simple Lie algebra
An exponentiation theorem for unbounded derivations
Two simple applications of the deformation of Lie algebras
Distributions centrales sur SL(2,R)
Représentations unitaires des groupes de Lie résolubles
Paramètres de Stokes et neutrino
Champs de spin entier dans l'espace-temps de De Sitter

Issue no. 4 Table of Contents

Les équations supplémentaires dans le formalisme de Newman-Penrose
A generalization of metric tensor and its application
Contribution à l'étude du champ de Yang et Mills
Sur les interactions dans les équations d'ondes des particules à spin
L'état fondamental de l'oscillateur harmonique est-il un cycle limite ?