{ "id": "1712.05299", "version": "v1", "published": "2017-12-14T15:47:45.000Z", "updated": "2017-12-14T15:47:45.000Z", "title": "Extensions between Verma modules for dihedral groups", "authors": [ "Gurbir Dhillon", "Visu Makam" ], "categories": [ "math.RT" ], "abstract": "Computing the extensions between Verma modules is in general a very difficult problem. Using Soergel bimodules, one can construct a graded version of the principal block of Category $\\mathcal{O}$ for any finite coxeter group. In this setting, we compute the extensions between Verma modules for dihedral groups.", "revisions": [ { "version": "v1", "updated": "2017-12-14T15:47:45.000Z" } ], "analyses": { "subjects": [ "17B10" ], "keywords": [ "verma modules", "dihedral groups", "extensions", "finite coxeter group", "principal block" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }