
Permutation Pattern
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. n combinatorial mathematics and theoretical computer science, a permutation pattern is a sub-permutation of a longer permutation. The permutation written in the one-line notation is said to contain the permutation if there exists a subsequence of entries of that has the same relative order as , and in this case is said to be a pattern of , written . Otherwise, is said to avoid the permutation . The subsequence of need not consist of consecutive entries. For example, p...
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. n combinatorial mathematics and theoretical computer science, a permutation pattern is a sub-permutation of a longer permutation. The permutation written in the one-line notation is said to contain the permutation if there exists a subsequence of entries of that has the same relative order as , and in this case is said to be a pattern of , written . Otherwise, is said to avoid the permutation . The subsequence of need not consist of consecutive entries. For example, permutation = 391867452 (written in one-line notation) contains the pattern = 51342, as can be seen by considering the subsequence 91672. Such a subsequence is called a copy of .