{ "id": "1510.01900", "version": "v1", "published": "2015-10-07T11:25:14.000Z", "updated": "2015-10-07T11:25:14.000Z", "title": "The Bruhat order on clans", "authors": [ "Benjamin J. Wyser" ], "comment": "21 pages, 2 figures. Comments, questions, corrections welcome. arXiv admin note: substantial text overlap with arXiv:1301.1713", "categories": [ "math.CO", "math.AG" ], "abstract": "We give an explicit description of the closure containment order (or \"Bruhat order\") on the set of orbits of GL_p \\times GL_q on the flag variety GL_{p+q}/B, relative to the parametrization of the orbits by combinatorial objects called \"clans\". This leads to a corresponding description of the closures of such orbits as sets of flags satisfying certain incidence conditions encoded by the parametrizing clans.", "revisions": [ { "version": "v1", "updated": "2015-10-07T11:25:14.000Z" } ], "analyses": { "keywords": [ "bruhat order", "closure containment order", "explicit description", "flag variety", "combinatorial objects" ], "note": { "typesetting": "TeX", "pages": 21, "language": "en", "license": "arXiv", "status": "editable" } } }