A probabilistic approach to the asymptotics of the length of the longest alternating subsequence
The electronic journal of combinatorics, Tome 17 (2010)
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Let $LA_{n}(\tau)$ be the length of the longest alternating subsequence of a uniform random permutation $\tau\in\left[ n\right] $. Classical probabilistic arguments are used to rederive the asymptotic mean, variance and limiting law of $LA_{n}\left( \tau\right) $. Our methodology is robust enough to tackle similar problems for finite alphabet random words or even Markovian sequences in which case our results are mainly original. A sketch of how some cases of pattern restricted permutations can also be tackled with probabilistic methods is finally presented.
DOI :
10.37236/440
Classification :
60C05, 60F05, 60G15, 60G17, 05A16
Mots-clés : longest alternating subsequence, random permutations, random words, \(m\)-dependence, central limit theorem, law of the iterated logarithm
Mots-clés : longest alternating subsequence, random permutations, random words, \(m\)-dependence, central limit theorem, law of the iterated logarithm
Christian Houdré; Ricardo Restrepo. A probabilistic approach to the asymptotics of the length of the longest alternating subsequence. The electronic journal of combinatorics, Tome 17 (2010). doi: 10.37236/440
@article{10_37236_440,
author = {Christian Houdr\'e and Ricardo Restrepo},
title = {A probabilistic approach to the asymptotics of the length of the longest alternating subsequence},
journal = {The electronic journal of combinatorics},
year = {2010},
volume = {17},
doi = {10.37236/440},
zbl = {1203.60013},
url = {http://geodesic.mathdoc.fr/articles/10.37236/440/}
}
TY - JOUR AU - Christian Houdré AU - Ricardo Restrepo TI - A probabilistic approach to the asymptotics of the length of the longest alternating subsequence JO - The electronic journal of combinatorics PY - 2010 VL - 17 UR - http://geodesic.mathdoc.fr/articles/10.37236/440/ DO - 10.37236/440 ID - 10_37236_440 ER -
%0 Journal Article %A Christian Houdré %A Ricardo Restrepo %T A probabilistic approach to the asymptotics of the length of the longest alternating subsequence %J The electronic journal of combinatorics %D 2010 %V 17 %U http://geodesic.mathdoc.fr/articles/10.37236/440/ %R 10.37236/440 %F 10_37236_440
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