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The Functional Law of the Iterated Logarithm for the Empirical Process Based on Sample Means
Authors:John H. J. Einmahl  Andrew Rosalsky
Affiliation:(1) EURANDOM and Department of Mathematics and Computing Science, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands;(2) Department of Statistics, University of Florida, Box 118545, Gainesville, Florida, 32611-8545, U.S.A.
Abstract:Consider a double array 
$$left{ {X_{i,j} ;i geqslant 1,j geqslant } right}$$
of i.i.d. random variables with mean mgr and variance 
$$sigma ^2 (0 < sigma ^2 < infty )$$
and set 
$$Z_{i,n} = n^{ - 1/2} sumnolimits_{j = 1}^n {(X_{i,j} - mu )} /sigma $$
. Let 
$$hat Phi _{N,n} $$
denote the empirical distribution function of Z1, n,..., ZN, n and let PHgr be the standard normal distribution function. The main result establishes a functional law of the iterated logarithm for 
$$sqrt N (hat Phi _{N,n} - Phi )$$
, where n=n(N)rarrinfin as Nrarrinfin. For the proof, some lemmas are derived which may be of independent interest. Some corollaries of the main result are also presented.
Keywords:empirical process based on sample means  functional law of the iterated logarithm  double array  relative compactness  central limit theorem  Berry–  Esseen inequality
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