摘要
李文琦、邱彪骥[1]证明了:若xn x,xn的特征函数为(1- )-Pn,(bn>0,pn>0)且D2(xn)→D2(x),则X的特征函数为(1- )-p,(b>0,p>0),或为eirt,本文是在较弱的假设pn=O(bn)之下,得到同样的结论。
in this note, it is shown that, under the conditions Ex< k, n=1,2,..., the limit distribution of a sequence of Gamma-distributed random variables is either a Gamma distribution or a degenerate one.
关键词
极限分布
概率论
γ分布
Gamma distribution
limit distribution
infintely divisible law levy-khintchine presentation