The Green Conjecture for Exceptional Curves on a K3 Surface
1 Institute of Mathematics "Simion Stoilow" of the Romanian Academy P.O. Box 1-764, 014700 Bucharest, Romania
2 Sçoala Normal
Superioar
Bucure
ti, Calea Grivi
ei 21, Sector 1, 010702 Bucharest, Romania
3 Institut de Recherches Mathématiques Avancées Université Louis Pasteur et CNRS 7 rue René Descartes, 67084 Strasbourg Cedex, France
Correspondence: Correspondence to be sent to: pacienza{at}math.u-strasbg.fr
We use the Brill–Noether theory to prove the Green conjecture for exceptional curves on K3 surfaces. Such curves count among the few ones having Clifford dimension
3. We obtain our result by adopting an infinitesimal approach due to Pareschi, and using the degenerate version of the Hirschowitz–Ramanan–Voisin theorem obtained in the paper [4].