1. Let (2, F, P) be a probability space with a filtration F = (Fn)n20- (a) Let 71, 72 be two F-stopping times. Prove that T1 A 72 = min(71, 72) T1 VT2 := max(T1, T2) are both stopping times. (b) Let 7 be an F-stopping time. Prove that 7 + 1 is also an F-stopping time.
1. Let (2, F, P) be a probability space with a filtration F = (Fn)n20- (a) Let 71, 72 be two F-stopping times. Prove that T1 A 72 = min(71, 72) T1 VT2 := max(T1, T2) are both stopping times. (b) Let 7 be an F-stopping time. Prove that 7 + 1 is also an F-stopping time.
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 20E
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