{ "id": "math/0010047", "version": "v2", "published": "2000-10-04T18:21:31.000Z", "updated": "2000-11-07T19:15:01.000Z", "title": "Restricted 132-avoiding permutations", "authors": [ "T. Mansour", "A. Vainshtein" ], "comment": "10 pages", "categories": [ "math.CO" ], "abstract": "We study generating functions for the number of permutations on n letters avoiding 132 and an arbitrary permutation $\\tau$ on k letters, or containing $\\tau$ exactly once. In several interesting cases the generating function depends only on k and is expressed via Chebyshev polynomials of the second kind.", "revisions": [ { "version": "v2", "updated": "2000-11-07T19:15:01.000Z" } ], "analyses": { "subjects": [ "05A05", "05A15", "30B70", "42C05" ], "keywords": [ "study generating functions", "second kind", "chebyshev polynomials", "arbitrary permutation" ], "note": { "typesetting": "TeX", "pages": 10, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2000math.....10047M" } } }