Kitaev, Sergey (2005) Segmented partially ordered generalized patterns. Theoretical Computer Science, 349 (3). pp. 420-428. ISSN 0304-3975Full text not available in this repository. Request a copy from the Strathclyde author
We continue the study of partially ordered generalized patterns (POGPs) considered in [E. Babson, E. Steingrímsson, Generalized permutation patterns and a classification of the Mahonian statistics, Séminaire Lotharingien de Combinatoire, 2000, B44b:18pp] for permutations and in [A. Burstein, T. Mansour, Words restricted by patterns with at most 2 distinct letters, Electron. J. Combin. 9 (2) (2002) #R3] for words. We deal with segmental POGPs (SPOGPs). We state some general results and treat a number of patterns of length 4. We prove a result from [S. Kitaev, Multi-avoidance of generalized patterns, Discrete Math. 260 (2003) 89–100] in a much simpler way and also establish a connection between SPOGPs and walks on lattice points starting from the origin and remaining in the positive quadrant. We give a combinatorial interpretation of the powers of the (generalized) Fibonacci numbers. The entire distribution of the maximum number of non-overlapping occurrences of a generalized pattern with no dashes in permutations or words studied in [S. Kitaev, Partially ordered generalized patterns, Discrete Math. to appear, S. Kitaev, T. Mansour, Partially ordered generalized patterns and k-ary words, Ann. Combin. 7 (2003) 191–200], respectively, has its counterpart in case of SPOGPs.
|Keywords:||pattern avoidance, distribution, walks on lattice points, words, permutations, segmental patterns, Electronic computers. Computer science, Theoretical Computer Science, Computer Science(all)|
|Subjects:||Science > Mathematics > Electronic computers. Computer science|
|Department:||Faculty of Science > Computer and Information Sciences|
|Depositing user:||Pure Administrator|
|Date Deposited:||14 Oct 2014 14:56|
|Last modified:||22 Mar 2017 13:34|