Abstract:
Sufficient conditions for the weak convergence of the distributions of
the random variables $(1-x)\xi_x$ as $x\to1-$ to the limiting gamma-distribution are put forward.
The random variable $\xi_x$ has power-series distribution with radius of convergence $1$ and parameter $x\in(0,1)$.
Limit theorems for the probabilities $\mathbf P\{\xi_x=k\}$ are proposed.
Asymptotic expansions of local probabilities are derived for sums of
independent identically distributed variables with the same distribution as $\xi_x$ in a triangular array with $x\to1-$.
For the corresponding general allocation scheme,
local limit theorems for the joint distributions of the occupancies of the cells are obtained.
Keywords:power-series distributions, radius of convergence, triangular arrays, gamma-distribution, weak convergence.