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Let $(X_i)_{i \in \Bbb N}$ be a sequence of independent RV's with zero means $\Bbb E[X_i]=0$ and let $(b_i)_{i \in \Bbb N}$ be an increasing sequence of positive numbers satisfying $\sum_i \Bbb E[X_i^2]/b_i^2 < \infty$. Set $S_n:= \sum_{k=1}^n X_k$. Question 1: How to see that $\varinjlim_{n \to ...