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Weakly approaching sequences of random distributions

Published online by Cambridge University Press:  14 July 2016

Yuri Belyaev*
Affiliation:
Umeå University
Sara Sjöstedt-de Luna*
Affiliation:
Umeå University
*
Postal address: Department of Mathematical Statistics, Umeå University, S-901 87 Umeå, Sweden
Postal address: Department of Mathematical Statistics, Umeå University, S-901 87 Umeå, Sweden

Abstract

We introduce the notion of weakly approaching sequences of distributions, which is a generalization of the well-known concept of weak convergence of distributions. The main difference is that the suggested notion does not demand the existence of a limit distribution. A similar definition for conditional (random) distributions is presented. Several properties of weakly approaching sequences are given. The tightness of some of them is essential. The Cramér-Lévy continuity theorem for weak convergence is generalized to weakly approaching sequences of (random) distributions. It has several applications in statistics and probability. A few examples of applications to resampling are given.

Type
Research Papers
Copyright
Copyright © Applied Probability Trust 2000 

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Footnotes

Research supported by the Bank of Sweden Tercentenary Foundation, and by MISTRA, the Foundation of Strategic Environmental Research

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