{ "id": "math/0606231", "version": "v1", "published": "2006-06-09T21:28:00.000Z", "updated": "2006-06-09T21:28:00.000Z", "title": "Intrinsic Linking and Knotting in Virtual Spatial Graphs", "authors": [ "Thomas Fleming", "Blake Mellor" ], "comment": "13 pages, 13 figures", "journal": "Alg. Geom. Top., Vol. 7, 2007, pp. 583-601", "categories": [ "math.GT", "math.CO" ], "abstract": "We introduce a notion of intrinsic linking and knotting for virtual spatial graphs. Our theory gives two filtrations of the set of all graphs, allowing us to measure, in a sense, how intrinsically linked or knotted a graph is; we show that these filtrations are descending and non-terminating. We also provide several examples of intrinsically virtually linked and knotted graphs. As a byproduct, we introduce the {\\it virtual unknotting number} of a knot, and show that any knot with non-trivial Jones polynomial has virtual unknotting number at least 2.", "revisions": [ { "version": "v1", "updated": "2006-06-09T21:28:00.000Z" } ], "analyses": { "subjects": [ "57M25", "57M15", "05C10" ], "keywords": [ "virtual spatial graphs", "intrinsic linking", "virtual unknotting number", "non-trivial jones polynomial", "filtrations" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 13, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2006math......6231F" } } }