{ "id": "2003.10700", "version": "v1", "published": "2020-03-24T07:43:22.000Z", "updated": "2020-03-24T07:43:22.000Z", "title": "The plethystic inverse of the odd Lie representations $Lie_{2n+1}$", "authors": [ "Sheila Sundaram" ], "comment": "13 pages", "categories": [ "math.CO", "math.RT" ], "abstract": "The Frobenius characteristic of $Lie_n,$ the representation of the symmetric group $S_n$ afforded by the free Lie algebra, is known to satisfy many interesting plethystic identities. In this paper we prove a conjecture of Richard Stanley establishing the plethystic inverse of the sum $\\sum_{n\\geq 0} Lie_{2n+1}$ of the odd Lie characteristics. We obtain an apparently new plethystic decomposition of the regular representation of $S_n$ in terms of irreducibles indexed by hooks, and the Lie representations.", "revisions": [ { "version": "v1", "updated": "2020-03-24T07:43:22.000Z" } ], "analyses": { "subjects": [ "05E10", "20C30" ], "keywords": [ "odd lie representations", "plethystic inverse", "free lie algebra", "odd lie characteristics", "frobenius characteristic" ], "note": { "typesetting": "TeX", "pages": 13, "language": "en", "license": "arXiv", "status": "editable" } } }