A permutation regularity lemma
The electronic journal of combinatorics, Tome 13 (2006)
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We introduce a permutation analogue of the celebrated Szemerédi Regularity Lemma, and derive a number of consequences. This tool allows us to provide a structural description of permutations which avoid a specified pattern, a result that permutations which scatter small intervals contain all possible patterns of a given size, a proof that every permutation avoiding a specified pattern has a nearly monotone linear-sized subset, and a "thin deletion" result. We also show how one can count sub-patterns of a permutation with an integral, and relate our results to permutation quasirandomness in a manner analogous to the graph-theoretic setting.
DOI :
10.37236/1048
Classification :
05D40, 05A05
Mots-clés : Szemerédi regularity lemma, permutation quasirandomness
Mots-clés : Szemerédi regularity lemma, permutation quasirandomness
Joshua N. Cooper. A permutation regularity lemma. The electronic journal of combinatorics, Tome 13 (2006). doi: 10.37236/1048
@article{10_37236_1048,
author = {Joshua N. Cooper},
title = {A permutation regularity lemma},
journal = {The electronic journal of combinatorics},
year = {2006},
volume = {13},
doi = {10.37236/1048},
zbl = {1085.05065},
url = {http://geodesic.mathdoc.fr/articles/10.37236/1048/}
}
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