The behaviour of sums of independent random variables
Teoriâ veroâtnostej i ee primeneniâ, Tome 19 (1974) no. 2, pp. 387-391
Citer cet article
Voir la notice de l'article provenant de la source Math-Net.Ru
In the paper, a necessary and sufficient condition is given in order that $$ -\infty<\varliminf_{n\to\infty}\frac{S_n-mS_n}{a_n}\le\varlimsup\frac{S_n-mS_n}{a_n}<\infty, $$ where $\{\xi_n\}$ is a sequence of independent random variables, $S_n=\xi_1+\dots+\xi_n$; $m\xi$ is the median of $\xi$; $\{a_n\}$ is an increasing sequence of positive numbers such that there exists, a sequence of indices $\{m_n\}$ for which $$ 1<C_1\le\frac{a_{m_{n+1}}}{a_{m_n}}\le C_2<\infty. $$