## Théoremès d'annulation et lieux de degenerescence en petit corang

### Summary

Summary: After giving an explicit description of all the non vanishing Dolbeault cohomology groups of ample line bundles on grassmannians, I give two series of vanishing theorems for ample vector bundles on a smooth projective variety. They imply a part of a conjecture by Fulton and Lazarsfeld about the connectivity of some degeneracy loci.

14F17

### Keywords/Phrases

théorèmes d'annulation, grassmannienne