647概率简单数值题short
Predictable-Transform Martingale 2
题目
M_n = sum_(k=1)^n (1+S_(k-1)^2) * X_k, where X_k are iid symmetric ±1. Is (M_n) a martingale with respect to the natural filtration?
解题计时
0:00
提交作答时记录,用于后续平均用时统计。
你的答案
题目
M_n = sum_(k=1)^n (1+S_(k-1)^2) * X_k, where X_k are iid symmetric ±1. Is (M_n) a martingale with respect to the natural filtration?
解题计时
0:00
提交作答时记录,用于后续平均用时统计。
你的答案