{ "id": "1011.4640", "version": "v4", "published": "2010-11-21T05:49:44.000Z", "updated": "2012-09-02T08:29:14.000Z", "title": "A Functorial Map from Virtual Knots to Classical Knots and Generalisations of Parity", "authors": [ "Vassily Olegovich Manturov" ], "comment": "One key argument is corrected; new projections satisfying the same properties are constructed", "categories": [ "math.GT" ], "abstract": "We construct various functorial maps (projections) from virtual knots to classical knots. These maps are defined on diagrams of virtual knots; in terms of Gauss diagram each of them can be represented as a deletion of some chords. The construction relies upon the notion of parity. As corollaries, we prove that the minimal classical crossing number for classical knots.", "revisions": [ { "version": "v4", "updated": "2012-09-02T08:29:14.000Z" } ], "analyses": { "subjects": [ "57M25", "57M27" ], "keywords": [ "virtual knots", "classical knots", "functorial map", "generalisations", "minimal classical crossing number" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2010arXiv1011.4640O" } } }