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Some asymptotic results on multiple matching

Published online by Cambridge University Press:  14 July 2016

R. Hafner
Affiliation:
Universität Dortmund
W. Sendler
Affiliation:
Universität Dortmund

Abstract

We consider sn randomly chosen permutations of the numbers 1, 2, …, n, and write them under each other, thus forming an s × n matrix, called “random-batch”. A rule, prescribing how many elements of a column may occur exactly one time, how many may occur exactly two times, etc., is called a fixpoint-structure. Assuming each possible permutation to be chosen with equal probability, the number of columns having a certain fixpoint-structure F is a random variable X(F). The limiting distribution of X(F) for n→ ∞ is considered for different cases of s = s(n). The main result (Theorem 4) says, that the common distribution of a finite number t of given fixpoint-structures tends to the product of t Poisson-laws, n→ ∞.

Type
Research Papers
Copyright
Copyright © Applied Probability Trust 1974 

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