{ "id": "2212.01664", "version": "v1", "published": "2022-12-03T18:35:05.000Z", "updated": "2022-12-03T18:35:05.000Z", "title": "Counting rational curves with an $m$-fold point", "authors": [ "Indranil Biswas", "Chitrabhanu Chaudhuri", "Apratim Choudhury", "Ritwik Mukherjee", "Anantadulal Paul" ], "comment": "22 pages, 15 figures", "categories": [ "math.AG", "math.DG", "math.SG" ], "abstract": "We obtain a recursive formula for the number of rational degree $d$ curves in $\\mathbb{CP}^2$ that pass through $3d+1-m$ generic points and that have an $m$-fold singular point. The special case of counting curves with a triple point was solved earlier by other authors. We obtain the formula by considering a family version of Kontsevich's recursion formula, in contrast to the excess intersection theoretic approach of others. A large number of low degree cases have been worked out explicitly.", "revisions": [ { "version": "v1", "updated": "2022-12-03T18:35:05.000Z" } ], "analyses": { "subjects": [ "14N35", "14J45", "53D45" ], "keywords": [ "counting rational curves", "fold point", "excess intersection theoretic approach", "low degree cases", "fold singular point" ], "note": { "typesetting": "TeX", "pages": 22, "language": "en", "license": "arXiv", "status": "editable" } } }