Approximation of the distribution of sums of independent variables with values in infinite-dimensional spaces

V. M. Zolotarev

Teoriâ veroâtnostej i ee primeneniâ, Tome 21 (1976) no. 4, pp. 741-758

Résumé

The problem under consideration is to estimate the distance, with respect to a chosen metric $\mu$, between two linear combinations $\displaystyle X=\sum_jc_jX_j$ and $\displaystyle Y=\sum_jc_jY_j$ of independent random variables with values in a Banach space $U$. General results of this paper enable, in particular, to effectively estimate the accuracy of approximation of the distributions of normalized sums of independent random $U$-valued variables by a normal law. When choosing $\mu$ in an appropriate way, one obtains estimates quite analogous to those known in the simplest case $U=R^1$.