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The strong law of large numbers for dependent random variables. (English) Zbl 1082.60023

This paper establishes two results (sufficient conditions) on the strong law of large numbers under negative association (Theorem 2) and under \(\rho\)-mixing (Theorem 5), respectively. Some other results on sums of negatively associated random variables were obtained by P. Matuła [Stat. Probab. Lett. 15, No. 3, 209–213 (1992; Zbl 0925.60024)]. The definition of negative association due to J. D. Esary, F. Proschan and D. W. Walkup [Ann. Math. Stat. 38, 1466–1474 (1967; Zbl 0183.21502)] and K. Joag-Dey and F. Proschan [Ann. Stat. 11, 286–295 (1983; Zbl 0508.62041)] and the definition of \(\rho\)-mixing based on the Kolmogorov-Rozanov mixing coefficient \(\rho(n)\) are given.
Theorem 5 generalizes the results of Q.-M. Shao [Ann. Probab. 23, No. 2, 948–965 (1995; Zbl 0831.60028)] and I. Fazekas and O. Klesov [Theory Probab. Appl. 45, No. 3, 436–449 (2000) and Teor. Veroyatn. Primen. 45, No. 3, 568–583(2000; Zbl 0991.60021)]. The results are obtained by using the maximal inequality of J. Hájek andA. Rényi [Acta Math. Acad. Sci. Hung. 6, 281–283 (1956; Zbl 0067.10701)].

MSC:

60F15 Strong limit theorems
60G50 Sums of independent random variables; random walks
Full Text: DOI

References:

[1] Chung, K. L., Note on some strong laws of large numbers, Amer. J. Math., 69, 189-192 (1947) · Zbl 0034.07103
[2] Esary, J.; Proschan, F.; Walkup, D., Association of random variables with applications, Ann. Math. Statist., 38, 1466-1474 (1967) · Zbl 0183.21502
[3] Fazekas, I.; Klesov, O., A general approach to the strong laws of large numbers, Teor. Verojatnost. i Primenen., 45, 569-583 (2000) · Zbl 0991.60021
[4] Háyek, J.; Rényi, A., Generalization of an inequality of Kolmogorov, Acta. Math. Acad. Sci. Hungar., 6, 281-283 (1955) · Zbl 0067.10701
[5] Joag-Dev, K.; Proschan, F., Negative association of random variables with applications, Ann. Statist., 11, 286-295 (1983) · Zbl 0508.62041
[6] Matuła, P., A note on the almost sure convergence of sums of negatively dependent random variables, Statist. Probab. Lett., 15, 209-213 (1992) · Zbl 0925.60024
[7] Révész, P., The Laws of Large Numbers (1968), Academic Press: Academic Press New York · Zbl 0203.50403
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