Question: 14.13 Consider a branching process with m the expected offspring size. We have seen that the process Xn/mn is a martingale where Xn is the

14.13 Consider a branching process with m the expected offspring size. We have seen that the process Xn/mn is a martingale where Xn is the size of generation n.

Show that if m > 1, then Xn → ∞ almost surely.

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