{ "id": "2409.06006", "version": "v1", "published": "2024-09-09T19:02:32.000Z", "updated": "2024-09-09T19:02:32.000Z", "title": "Inequalities characterizing distinguished unipotent orbits", "authors": [ "Alexander Bertoloni Meli", "Teruhisa Koshikawa", "Jonathan Leake" ], "comment": "23 pages, comments welcome!", "categories": [ "math.RT", "math.GR" ], "abstract": "In this paper we prove a new characterization of the distinguished unipotent orbits of a connected reductive group over an algebraically closed field of characteristic 0. For classical groups we prove the characterization by a combinatorial computation, and for exceptional groups we check it with a computer. This characterization is needed in the theory of cuspidal sheaves on the stack of L-parameters in forthcoming work of the first two named authors.", "revisions": [ { "version": "v1", "updated": "2024-09-09T19:02:32.000Z" } ], "analyses": { "subjects": [ "22E10", "20G20", "17B22" ], "keywords": [ "inequalities characterizing distinguished unipotent orbits", "characterization", "combinatorial computation", "exceptional groups", "cuspidal sheaves" ], "note": { "typesetting": "TeX", "pages": 23, "language": "en", "license": "arXiv", "status": "editable" } } }