Alphabeta Math

Conditional Distributions and Regular Conditional Probability

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1 · Prerequisites
Abstract Algebra
Combinatorics
Linear Algebra
Measure Theory
Probability
Real Analysis
Set Theory
Topology
2 · Logical flowchart

3 · Items

Definition

Measure kernel and probability kernel

Theorem

Measurability of integration against a kernel

Definition

Composition of probability kernels

Lemma

Kernel composition is well defined and associative

Definition

Conditional probability given a sigma algebra

Definition

Regular conditional distribution

Definition

Regular conditional probability

Lemma

Simultaneous rational conditional distribution function versions

Lemma

Rational conditional distribution functions produce real regular kernels

Theorem

Existence of regular conditional distributions for standard borel targets

Lemma

Simultaneous ae uniqueness of regular conditional distributions

Theorem

Conditional integration through a regular conditional law

Definition

Conditional law given a random element

Lemma

Regular conditional kernels factor through a standard borel conditioning variable

Theorem

Disintegration of a joint law on standard borel spaces

Corollary

Conditional expectation as a measurable function of the conditioning variable

Theorem

Conditional density formula

Theorem

Bayes formula for dominated kernels

Sources