{ "id": "2008.08222", "version": "v1", "published": "2020-08-19T02:09:54.000Z", "updated": "2020-08-19T02:09:54.000Z", "title": "Unimodality of a refinement of Lassalle's sequence", "authors": [ "Mihir Singhal" ], "categories": [ "math.CO" ], "abstract": "Defant, Engen, and Miller defined a refinement of Lassalle's sequence $A_{k+1}$ by considering uniquely sorted permutations of length $2k+1$ whose first element is $\\ell$. They showed that each such sequence is symmetric in $\\ell$ and conjectured that these sequences are unimodal. We prove that the sequences are unimodal.", "revisions": [ { "version": "v1", "updated": "2020-08-19T02:09:54.000Z" } ], "analyses": { "keywords": [ "lassalles sequence", "refinement", "unimodality", "first element" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }