Convergence in distribution norms in the CLT for non identical distributed random variables

Abstract : We study the convergence in distribution norms in the Central Limit Theorem for non identical distributed random variables. We also consider local developments (Edgeworth expansion). This kind of results is well understood in the case of smooth test functions f. If one deals with measurable and bounded test functions (convergence in total variation distance), a well known theorem due to Prohorov shows that some regularity condition for the law of the random variables Xn, n∈N, on hand is needed. Essentially, one needs that the law of Xn is locally lower bounded by the Lebesgue measure (Doeblin's condition). This topic is also widely discussed in the literature (see the book by Battacharaya and Rao). Our main contribution is to discuss convergence in distribution norms, that is to replace the test function f by some derivative ∂αf and to obtain upper bounds for εn(∂αf) in terms of the original function f.
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Vlad Bally, Lucia Caramellino, Guillaume Poly. Convergence in distribution norms in the CLT for non identical distributed random variables. Electronic Journal of Probability, Institute of Mathematical Statistics (IMS), 2018, 23, paper 45, 51 p. ⟨10.1214/18-EJP174⟩. ⟨hal-01413548⟩

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