{ "id": "math/9810163", "version": "v1", "published": "1998-10-28T15:47:36.000Z", "updated": "1998-10-28T15:47:36.000Z", "title": "A general Hsu-Robbins-Erdos type estimate of tail probabilities of sums of independent identically distributed random variables", "authors": [ "Alexander R. Pruss" ], "categories": [ "math.PR" ], "abstract": "Let X_1,X_2,... be a sequence of independent and identically distributed random variables, and put S_n=X_1+...+X_n. Under some conditions on the positive sequence tau_n and the positive increasing sequence a_n, we give necessary and sufficient conditions for the convergence of sum_{n=1}^infty tau_n P(|S_n|>t a_n) for all t>0, generalizing Baum and Katz's (1965) generalization of the Hsu-Robbins-Erdos (1947, 1949) law of large numbers, also allowing us to characterize the convergence of the above series in the case where tau_n=1/n and a_n=(n log n)^{1/2} for n>1, thereby answering a question of Spataru. Moreover, some results for non-identically distributed independent random variables are obtained by a recent comparison inequality. Our basic method is to use a central limit theorem estimate of Nagaev (1965) combined with the Hoffman-Jorgensen inequality(1974).", "revisions": [ { "version": "v1", "updated": "1998-10-28T15:47:36.000Z" } ], "analyses": { "subjects": [ "60F05", "60F10", "60F15", "60E15" ], "keywords": [ "independent identically distributed random variables", "general hsu-robbins-erdos type estimate", "tail probabilities", "distributed independent random variables" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "1998math.....10163P" } } }