Title
The Number of m-ary Search Trees on n Keys
Abstract
Problems associated with m-ary trees have been studied by computer scientists and combinatorialists. It is well known that a simple generalization of the Catalan numbers counts the number of m-ary trees on n nodes. In this paper we consider τm, n, the number of m-ary search trees on n keys, a quantity that arises in studying the space of m-ary search trees under the uniform probability model. We prove an exact formula for τm, n, both by analytic and by combinatorial means. We use uniform local approximations for sums of i.i.d. random variables to study the asymptotic development of τm, n for fixed m as n→∞.
Year
DOI
Venue
1997
10.1017/S0963548397003118
Combinatorics, Probability & Computing
Keywords
Field
DocType
n keys,n node,m-ary search tree,combinatorial mean,catalan number,asymptotic development,uniform probability model,m-ary search trees,m-ary tree,uniform local approximation,computer scientist,n key,random variable
Exact formula,Discrete mathematics,Probability model,Random variable,Combinatorics,Catalan number,Weight-balanced tree,Mathematics
Journal
Volume
Issue
Citations 
6
4
3
PageRank 
References 
Authors
0.54
1
2
Name
Order
Citations
PageRank
James Allen Fill125340.88
Robert P. Dobrow2355.28