{ "id": "2102.12067", "version": "v1", "published": "2021-02-24T04:51:16.000Z", "updated": "2021-02-24T04:51:16.000Z", "title": "The intersection polynomials of a virtual knot", "authors": [ "Ryuji Higa", "Takuji Nakamura", "Yasutaka Nakanishi", "Shin Satoh" ], "comment": "54 pages, 32 figures", "categories": [ "math.GT" ], "abstract": "We introduce three kinds of invariants of a virtual knot called the first, second, and third intersection polynomials. The definition is based on the intersection number of a pair of curves on a closed surface. We study properties of the intersection polynomials and their applications concerning the behavior on symmetry, the crossing number and the virtual crossing number, a connected sum of virtual knots, characterizations of intersection polynomials, finite type invariants of order two, and a flat virtual knot.", "revisions": [ { "version": "v1", "updated": "2021-02-24T04:51:16.000Z" } ], "analyses": { "subjects": [ "57M25", "57M27" ], "keywords": [ "finite type invariants", "flat virtual knot", "third intersection polynomials", "intersection number", "study properties" ], "note": { "typesetting": "TeX", "pages": 54, "language": "en", "license": "arXiv", "status": "editable" } } }