{ "id": "math/0612796", "version": "v1", "published": "2006-12-27T20:28:07.000Z", "updated": "2006-12-27T20:28:07.000Z", "title": "Dissecting the 2-sphere by immersions", "authors": [ "Tahl Nowik" ], "categories": [ "math.GT" ], "abstract": "The self intersection of an immersion i : S^2 \\to R^3 dissects S^2 into pieces which are planar surfaces (unless i is an embedding). In this work we determine what collections of planar surfaces may be obtained in this way. In particular, for every n we construct an immersion i : S^2 \\to R^3 with 2n triple points, for which all pieces are discs.", "revisions": [ { "version": "v1", "updated": "2006-12-27T20:28:07.000Z" } ], "analyses": { "keywords": [ "planar surfaces", "2n triple points", "dissecting", "self intersection", "collections" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2006math.....12796N" } } }