{ "id": "2401.05816", "version": "v1", "published": "2024-01-11T10:31:52.000Z", "updated": "2024-01-11T10:31:52.000Z", "title": "Decomposition numbers for weight 3 blocks of Iwahori--Hecke algebras of type B", "authors": [ "Matthew Fayers", "Lorenzo Putignano" ], "categories": [ "math.RT" ], "abstract": "Let B be a weight-$3$ block of an Iwahori--Hecke algebra of type B over any field. We develop the combinatorics of B to prove that the decomposition numbers for B are all 0 or 1.", "revisions": [ { "version": "v1", "updated": "2024-01-11T10:31:52.000Z" } ], "analyses": { "subjects": [ "20C08", "20C30", "05E10" ], "keywords": [ "decomposition numbers", "iwahori-hecke algebra", "combinatorics" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }