{ "id": "1501.01557", "version": "v1", "published": "2015-01-07T16:52:02.000Z", "updated": "2015-01-07T16:52:02.000Z", "title": "Counting curves on a general linear system with up to two singular points", "authors": [ "Somnath Basu", "Ritwik Mukherjee" ], "comment": "22 pages; generalizes results of our previous papers to curves on any linear system. We welcome comments and suggestions", "categories": [ "math.AG", "math.AT" ], "abstract": "In this paper we obtain an explicit formula for the number of curves in a compact complex surface $X$ (passing through the right number of generic points), that has up to one node and one singularity of codimension $k$, provided the total codimension is at most $7$. We use a classical fact from differential topology: the number of zeros of a generic smooth section of a vector bundle $V$ over $M$, counted with signs, is the Euler class of $V$ evaluated on the fundamental class of $M$.", "revisions": [ { "version": "v1", "updated": "2015-01-07T16:52:02.000Z" } ], "analyses": { "subjects": [ "14N10", "14H20", "55R55", "57R20", "57R22", "57R45" ], "keywords": [ "general linear system", "singular points", "counting curves", "compact complex surface", "generic smooth section" ], "note": { "typesetting": "TeX", "pages": 22, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2015arXiv150101557B" } } }