Sym\'etrie en Physique: Alg\`ebres de Lie, Th\'eorie des groupes et   Repr\'esentations
  These notes form an introduction to Lie algebras and group theory. Most of the material can be found in many works by various authors given in the list of references. The reader is referred to such works for more detail. 
Adil Belhaj
hep-th math-ph math.MP