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Iterated conditional expectation over nonnested sigma-algebras
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Mathematics
Area of mathematics
Analysis
Real analysis
Measure theory
Conditional expectation
2026-09-28
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In general,
E
[
E
[
X
∣
G
]
∣
H
]
=
E
[
X
∣
G
∩
H
]
.
(1)
Equality does hold when either
sigma-algebra
contains the other or when they are independent.
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Conditional expectation
Measure theory
Real analysis
Analysis
Area of mathematics
Mathematics
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Past exam of the mathematics course of the University of Cambridge
/
2021
/
iii
/
Paper 201
/
1
/
f
/
Solution
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