{ "id": "1410.3147", "version": "v1", "published": "2014-10-12T20:47:01.000Z", "updated": "2014-10-12T20:47:01.000Z", "title": "Linear bounds on matrix extremal functions using visibility hypergraphs", "authors": [ "Jesse Geneson", "Lilly Shen" ], "comment": "11 pages, 4 figures", "categories": [ "math.CO", "cs.DM" ], "abstract": "The 0-1 matrix A contains a 0-1 matrix M if some submatrix of A can be transformed into M by changing some ones to zeroes. If A does not contain M, then A avoids M. Let ex(n,M) be the maximum number of ones in an n x n 0-1 matrix that avoids M, and let ex_k(m,M) be the maximum number of columns in a 0-1 matrix with m rows that avoids M and has at least k ones in every column. A method for bounding ex(n,M) by using bounds on the maximum number of edges in bar visibility graphs was introduced in (R. Fulek, Discrete Mathematics 309, 2009). By using a similar method with bar visibility hypergraphs, we obtain linear bounds on the extremal functions of other forbidden 0-1 matrices.", "revisions": [ { "version": "v1", "updated": "2014-10-12T20:47:01.000Z" } ], "analyses": { "subjects": [ "05D99" ], "keywords": [ "matrix extremal functions", "linear bounds", "maximum number", "bar visibility hypergraphs", "bar visibility graphs" ], "note": { "typesetting": "TeX", "pages": 11, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2014arXiv1410.3147G" } } }