{ "id": "math/0011127", "version": "v5", "published": "2000-11-17T17:31:26.000Z", "updated": "2002-01-09T15:11:26.000Z", "title": "Restricted permutations and Chebyshev polynomials", "authors": [ "T. Mansour", "A. Vainshtein" ], "comment": "17 pages, 5 figures", "categories": [ "math.CO" ], "abstract": "We study generating functions for the number of permutations in $\\SS_n$ subject to two restrictions. One of the restrictions belongs to $\\SS_3$, while the other to $\\SS_k$. It turns out that in a large variety of cases the answer can be expressed via Chebyshev polynomials of the second kind.", "revisions": [ { "version": "v5", "updated": "2002-01-09T15:11:26.000Z" } ], "analyses": { "subjects": [ "05A05", "05A15", "30B70", "42C05" ], "keywords": [ "chebyshev polynomials", "restricted permutations", "second kind", "study generating functions", "large variety" ], "note": { "typesetting": "TeX", "pages": 17, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2000math.....11127M" } } }