{ "id": "2009.05785", "version": "v1", "published": "2020-09-12T13:15:33.000Z", "updated": "2020-09-12T13:15:33.000Z", "title": "Number of Triangulations of a Möbius Strip", "authors": [ "Bazier-Matte Véronique", "Huang Ruiyan", "Luo Hanyi" ], "categories": [ "math.CO" ], "abstract": "Consider a M\\\"obius strip with $n$ chosen points on its edge. A triangulation is a maximal collection of arcs among these points and cuts the strip into triangles. In this paper, we proved the number of all triangulations that one can obtain from a M\\\"obius strip with $n$ chosen points on its edge is given by $4^{n-1}+\\binom{2n-2}{n-1}$, then we made the connection with the number of clusters in the quasi-cluster algebra arising from the M\\\"obius strip.", "revisions": [ { "version": "v1", "updated": "2020-09-12T13:15:33.000Z" } ], "analyses": { "subjects": [ "13F60" ], "keywords": [ "möbius strip", "triangulation", "chosen points", "maximal collection", "connection" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }