{ "id": "0911.5474", "version": "v1", "published": "2009-11-29T15:46:50.000Z", "updated": "2009-11-29T15:46:50.000Z", "title": "Modular properties of nodal curves on K3 surfaces", "authors": [ "Mihai Halic" ], "categories": [ "math.AG" ], "abstract": "In this paper we partially address two issues: - The first is a rigidity property for pairs (S,C) consisting of a general projective K3 surface S, and a curve C obtained as the normalization of a nodal, hyperplane section of S. We prove that a non-trivial deformation of such a pair (S,C) induces a non-trivial deformation of C; - The second question concerns the Wahl map of curves C as above. We prove that the Wahl map of the normalization of a nodal curve contained in a general projective K3 surface is non-surjective. In both cases, we impose upper bounds on the number of nodes of the hyperplane section.", "revisions": [ { "version": "v1", "updated": "2009-11-29T15:46:50.000Z" } ], "analyses": { "subjects": [ "14H10", "14J28", "14D15" ], "keywords": [ "nodal curve", "modular properties", "general projective k3 surface", "wahl map", "hyperplane section" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2009arXiv0911.5474H" } } }