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A Note on Sequential Selection from Permutations

Published online by Cambridge University Press:  01 January 2000

ALEXANDER V. GNEDIN
Affiliation:
Institute of Mathematical Stochastics, University of Göttingen, Lotzestrasse 13, 37083 Göttingen, Germany (e-mail: gnedin@math.uni-goettingen.de)

Abstract

The maximum expected length of an increasing subsequence which can be selected by a non-anticipating policy from a random permutation of 1, …, n is known to be asymptotic to √2n. We give a new proof of this fact and demonstrate a policy which achieves this value.

Type
Research Article
Copyright
2000 Cambridge University Press

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