Eq. (12), p. 6 — the reduced state Tr_K |ψ⟩⟨ψ| equals XX*/Tr(XX*) for the n × k coordinate matrix X(i, j) = ψ_ij

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Eq. (12), p. 6 — the reduced state Tr_K |ψ⟩⟨ψ| equals XX*/Tr(XX*) for the n × k coordinate matrix X(i, j) = ψ_ij · Prove2Me