Inversion d'op\'erateurs de courbure au voisinage d'une m\'etrique Ricci   parall\`ele
  Let $(M,g)$ be a compact riemannian manifold without boundary., with parallel Rici curvature. We show that some operators, affine relatively to the Ricci curvature,are locally invertible, near the metric $g$ 
Erwann Delay (LMA)
math.DG