{ "id": "2403.02434", "version": "v2", "published": "2024-03-04T19:32:42.000Z", "updated": "2024-05-14T12:40:37.000Z", "title": "On the character tables of the finite reductive groups $E_6(q)_{\\text{ad}}$ and ${^2\\!E}_6(q)_{\\text{ad}}$", "authors": [ "Meinolf Geck" ], "comment": "30 pages; added appendix by Jonas Hetz on groups of type D5", "categories": [ "math.RT" ], "abstract": "We show how the character tables of the groups $E_6(q)_{\\text{ad}}$ and ${^2\\!E}_6(q)_{\\text{ad}}$ can be constructed, where $q$ is a power of~$2$. (Partial results are also obtained for any $q$ not divisible by~$3$.) This is based on previous work by Hetz, Lusztig, Malle, Mizuno and Shoji, plus computations using Michel's version of {\\sf CHEVIE}. We also need some general results that are specific to semisimple groups which are not of simply connected type. A further crucial ingredient is the determination of the values of the unipotent characters on unipotent elements for groups of type $D_4$ and $D_5$ (in characteristic~$2$).", "revisions": [ { "version": "v2", "updated": "2024-05-14T12:40:37.000Z" } ], "analyses": { "subjects": [ "20C33", "20G40" ], "keywords": [ "finite reductive groups", "character tables", "partial results", "unipotent elements", "michels version" ], "note": { "typesetting": "TeX", "pages": 30, "language": "en", "license": "arXiv", "status": "editable" } } }