Une q - sp\'ecialisation pour les fonctions sym\'etriques monomiales
  We obtain the specialization of monomial symmetric functions on the alphabet (a-b)/(1-q). This gives a remarkable algebraic identity, and four new developments for the Macdonald polynomial associated with a row. The proofs are given in the framework of $\lambda$-ring theory. 
Michel Lassalle (CNRS,Paris)