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world:forward-downward-martingale

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world:forward-downward-martingale [2026/02/07 15:02]
rdouc
world:forward-downward-martingale [2026/02/07 15:03] (current)
rdouc
Line 76: Line 76:
 By the monotone convergence theorem, ​ By the monotone convergence theorem, ​
 $$ $$
-\mathbb E[U_\infty[a,​b]]<​\infty,​+\mathbb E[U_{0:\infty}[a,​b]]<​\infty,​
 $$ $$
 which implies that the total number of upcrossings is almost surely finite.  ​ which implies that the total number of upcrossings is almost surely finite.  ​
world/forward-downward-martingale.1770472943.txt.gz · Last modified: 2026/02/07 15:02 by rdouc