Proposition 45.2.4.label Let $(M, \tau)$ be a $\vnII_{1}$ factor, then $M_{n}(M)$ is a $\vnII_{1}$ factor, with normalised trace $\frac{1}{n}\text{Tr}_{n} \otimes \tau$.
Proposition 45.2.4.label Let $(M, \tau)$ be a $\vnII_{1}$ factor, then $M_{n}(M)$ is a $\vnII_{1}$ factor, with normalised trace $\frac{1}{n}\text{Tr}_{n} \otimes \tau$.
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