{ "id": "math/0312332", "version": "v2", "published": "2003-12-17T13:37:14.000Z", "updated": "2005-05-08T11:14:38.000Z", "title": "The combinatorics of orbital varieties closures of nilpotent order 2 in sl(n)", "authors": [ "Anna Melnikov" ], "comment": "20 pages", "journal": "Electronic Journal of Combinatorics, vol. 12(1), 2005, R21", "categories": [ "math.RT", "math.CO" ], "abstract": "We consider two partial orders on standard Young tableaux. The first one is induced from the weak right Bruhat order on symmetric group by Robinson-Schensted algorithm. The second one is induced from the order on Young diagrams by considering a Young tableau as a chain of Young diagrams. We show that these two orders of completely different nature coincide on the subset of Young tableaux with 2 columns or with 2 rows. This fact has very interesting geometric implications for orbital varieties of nilpotent order 2 in sl(n).", "revisions": [ { "version": "v2", "updated": "2005-05-08T11:14:38.000Z" } ], "analyses": { "subjects": [ "05E10", "17B10" ], "keywords": [ "orbital varieties closures", "nilpotent order", "young diagrams", "combinatorics", "weak right bruhat order" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 20, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2003math.....12332M" } } }