Can one prove for a sequence of positive random variable $$X_{n}$$ such that $\lim_{n\to \infty}E[x_{n} = 0]$ and $\lim_{n\to \infty}E[x_{n}x_{n}]= 0$ all the cumulants go to zero once $n\to \infty$ ?
Cumulants of a sequence of variables with zero mean and variance
gas
- 13
- 3