Remarques sur les spineurs de Killing transversaux

Quelques remarques sur les actions analytiques des reseaux des groupes de Lie de rang superieur

All the actions considered here are (real) analytic. Consider a subgroup of finite index of SL(n, Z). We prove, in particular, the (global) homotopical rigidity, for both its standard affine action on the torus of dimension n > 2, and its standard projective action on the sphere of dimesnion n-1>3.