{ "id": "0801.2412", "version": "v2", "published": "2008-01-16T01:00:55.000Z", "updated": "2008-05-31T18:44:46.000Z", "title": "Generalized permutation patterns -- a short survey", "authors": [ "Einar Steingrimsson" ], "comment": "11 pages. Added a section on asymptotics (Section 8), added more examples of barred patterns equal to generalized patterns (Section 7) and made a few other minor additions. To appear in ``Permutation Patterns, St Andrews 2007'', S.A. Linton, N. Ruskuc, V. Vatter (eds.), LMS Lecture Note Series, Cambridge University Press", "categories": [ "math.CO" ], "abstract": "An occurrence of a classical pattern p in a permutation \\pi is a subsequence of \\pi whose letters are in the same relative order (of size) as those in p. In an occurrence of a generalized pattern, some letters of that subsequence may be required to be adjacent in the permutation. Subsets of permutations characterized by the avoidance--or the prescribed number of occurrences--of generalized patterns exhibit connections to an enormous variety of other combinatorial structures, some of them apparently deep. We give a short overview of the state of the art for generalized patterns.", "revisions": [ { "version": "v2", "updated": "2008-05-31T18:44:46.000Z" } ], "analyses": { "subjects": [ "05A15", "05E15" ], "keywords": [ "generalized permutation patterns", "short survey", "subsequence", "occurrences-of generalized patterns", "combinatorial structures" ], "tags": [ "lecture notes" ], "note": { "typesetting": "TeX", "pages": 11, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2008arXiv0801.2412S" } } }