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Math Help - Commutation relation of operators

  1. #1
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    Commutation relation of operators

    Im reading in a quatum mechanics book and need help to show the following relationship, (please show all the steps):

    If A,B,C are operators:

    [A,BC] = B[A,C] + [A,B]C
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  2. #2
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    What is the definition of [A, B]? What about [A, C] and [A, BC]?
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