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On the Variety of Shapes on the Fringe of a Random Recursive Tree

Part of: Graph theory Limit theorems Combinatorial probability

Published online by Cambridge University Press:  14 July 2016

Qunqiang Feng  and
Hosam M. Mahmoud
Qunqiang Feng*
Affiliation:
University of Science and Technology of China
Hosam M. Mahmoud*
Affiliation:
The George Washington University
*
∗Postal address: Department of Statistics and Finance, University of Science and Technology of China, Hefei 230026, China. Email address: [email protected]
∗∗Postal address: Department of Statistics, The George Washington University, Washington, DC 20052, USA. Email address: [email protected]
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Abstract

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We consider a variety of subtrees of various shapes lying on the fringe of a recursive tree. We prove that (under suitable normalization) the number of isomorphic images of a given fixed tree shape on the fringe of the recursive tree is asymptotically Gaussian. The parameters of the asymptotic normal distribution involve the shape functional of the given tree. The proof uses the contraction method.

Keywords

Random treerecurrencecontraction method

MSC classification

Secondary: 05C05: Trees 60C05: Combinatorial probability 60F05: Central limit and other weak theorems
Type
Research Article
Information
Journal of Applied Probability , Volume 47 , Issue 1 , March 2010 , pp. 191 - 200
Copyright
Copyright © Applied Probability Trust 2010 

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