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I Direct product of a symmetry group with itself

  1. Mar 22, 2017 #1
    In group theory, what is the direct product of a symmetry group with itself? Say T*T or O*O?
  2. jcsd
  3. Mar 22, 2017 #2


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    Staff: Mentor

    What do you accept as an answer? A split short exact sequence? And what are T and O?
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