Proof of Theorem 2, p. 34: $\mathbb E_{P_Y}[\vartheta(\bullet,z)] = \Xi[Y](z)$ (Fubini step)

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Proof of Theorem 2, p. 34: $\mathbb E_{P_Y}[\vartheta(\bullet,z)] = \Xi[Y](z)$ (Fubini step) · Prove2Me