Question: Prove that Tr(T 1 T 2 ) = Tr(T 2 T 1 ). It follows immediately that Tr(T 1 T 2 T 3 ) =

Prove that Tr(T1T2) = Tr(T2T1). It follows immediately that Tr(T1T2T3) = Tr(T2T3T1), but is it the case that Tr(T1T2T3) = Tr (T2T1T3), in general? Prove it, or disprove it.

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