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arXiv 1308.4946math.CO

On the effective and automatic enumeration of polynomial permutation classes

Cheyne Homberger, Vince Vatter

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英文摘要:

We describe an algorithm, implemented in Python, which can enumerate any permutation class with polynomial enumeration from a structural description of the class. In particular, this allows us to find formulas for the number of permutations of length n which can be obtained by a finite number of block sorting operations (e.g., reversals, block transpositions, cut-and-paste moves).

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