Permutation groups arising from pattern involvement
arXiv:1605.05571 · doi:10.1007/s10801-019-00902-w
Abstract
For an arbitrary finite permutation group , subgroup of the symmetric group , we determine the permutations involving only members of as -patterns, i.e., avoiding all patterns in the set . The set of all -permutations with this property constitutes again a permutation group. We consequently refine and strengthen the classification of sets of permutations closed under pattern involvement and composition that is due to Atkinson and Beals.
39 pages; extensively reorganized and rewritten, misprints corrected