Let an entangled state | ψ ψ ⟩ ⟩ have a Schmidt decomposition : | ψ ψ ⟩ ⟩ = ∑ ∑ x p ( x ) | x A ⟩ ⟩ | x B ⟩ ⟩ where coefficients p(x) form a probability distribution, and thus are positive valued and sum to unity. The tensor product of this state is then, | ψ ψ ⟩ ⟩ ⊗ ⊗ m = ∑ ∑ x 1 , x 2 , … … , x m p ( x 1 ) p ( x 2 ) … … p ( x m ) | x 1 A x 2 A … … x m A ⟩ ⟩ | x 1 B x 2 B … … x m B ⟩ ⟩