`BookProof.ChapterBayesInference.exists_unitary_reproduces_posterior` (hprior : ∀ x, 0 ≤ prior x) (hprior_sum : ∑ x, prior x = 1) (hL : ∀ x y, 0 ≤ L x y) (hL_row : ∀ x, ∑ y, L x y

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`BookProof.ChapterBayesInference.exists_unitary_reproduces_posterior` (hprior : ∀ x, 0 ≤ prior x) (hprior_sum : ∑ x, prior x = 1) (hL : ∀ x y, 0 ≤ L x y) (hL_row : ∀ x, ∑ y, L x y · Prove2Me