Distribution of orbits in $\R^2$ of a finitely generated group of   $\SL(2,\R)$
  In this work, we study the asymptotic distribution of the non discrete orbits of a finitely generated group acting linearly on $\R^2$. To do this, we establish new equidistribution results for the horocyclic flow on the unitary tangent bundle of the associated surface. 
Fran\c{c}ois Maucourant (IRMAR), Barbara Schapira (LAMFA)
math.DS math.GR