Abstract:
The distribution of
\begin{gather*}
S_n=X_1+\dots+X_n
\\
(\mathbf P\{X_j=1\}=p_j,\quad\mathbf P\{X_j=0\}=1-p_j)
\end{gather*}
is investigated. Some results are obtained concerning the rate of its convergence to a Poisson law and to some modifications of the Poisson law.