{ "id": "math/0607194", "version": "v1", "published": "2006-07-07T13:47:58.000Z", "updated": "2006-07-07T13:47:58.000Z", "title": "Groebner Bases for Transportation Polytopes", "authors": [ "Christian Haase", "Andreas Paffenholz" ], "comment": "11 pages", "categories": [ "math.CO", "math.AC", "math.AG" ], "abstract": "The toric ideals of $3\\times 3$ transportation polytopes $T$ are quadratically generated. The only exception is the Birkhoff polytope $B_3$. If $T$ is not a multiple of $B_3$, these ideals even have squarefree quadratic initial ideals. This class contains all smooth $3 \\times 3$ transportation polytopes.", "revisions": [ { "version": "v1", "updated": "2006-07-07T13:47:58.000Z" } ], "analyses": { "subjects": [ "52B20", "14M25", "13P10" ], "keywords": [ "transportation polytopes", "groebner bases", "squarefree quadratic initial ideals", "birkhoff polytope", "toric ideals" ], "note": { "typesetting": "TeX", "pages": 11, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2006math......7194H" } } }