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Proof of `Exact conditioning costs and recovery of finite probability masses` (5th statement)

groundedproofs/Lax342547Proofs/Conditioning.lean · lax-342547

What this proof establishes

no assumptions

Assuming the claims on the left, the claim on the right holds — checked by the archive's pipeline. Proof code is not displayed here.

Read the Lean proof on GitHub

Description

Multiplying the conditional law by its actual retained mass cancels the normalization and recovers the original restricted point mass exactly.