{ "id": "2202.01755", "version": "v1", "published": "2022-02-03T18:21:18.000Z", "updated": "2022-02-03T18:21:18.000Z", "title": "Classification of doubly periodic untwisted (p,q)-weaves by their crossing number", "authors": [ "Mizuki Fukuda", "Motoko Kotani", "Sonia Mahmoudi" ], "comment": "22 pages, 12 figures. arXiv admin note: text overlap with arXiv:2108.09464", "categories": [ "math.GT" ], "abstract": "A weave is the lift to the Euclidean thickened plane of a set of infinitely many planar crossed geodesics, that can be characterized by a number of sets of threads describing the organization of the non-intersecting curves, together with a set of crossing sequences representing the entanglements. In this paper, the classification of a specific class of doubly periodic weaves, called untwisted (p,q)-weaves, is done by their crossing number, which is the minimum number of crossings that can possibly be found in a unit cell of its infinite weaving diagrams. Such a diagram can be considered as a particular type of quadrivalent periodic planar graph with an over or under information at each vertex, whose unit cell corresponds to a link diagram in a thickened torus. Moreover, considering that a weave is not uniquely defined by its sets of threads and its crossing sequences, we also specify the notion of equivalence classes by introducing a new parameter, called crossing matrix.", "revisions": [ { "version": "v1", "updated": "2022-02-03T18:21:18.000Z" } ], "analyses": { "subjects": [ "57K10", "57K12", "57M15", "05A05" ], "keywords": [ "crossing number", "doubly periodic", "classification", "quadrivalent periodic planar graph", "unit cell corresponds" ], "note": { "typesetting": "TeX", "pages": 22, "language": "en", "license": "arXiv", "status": "editable" } } }