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Duality principle

  1. Jun 15, 2013 #1
    Have i done it correctly?
    ImageUploadedByPhysics Forums1371301423.550375.jpg
  2. jcsd
  3. Jun 15, 2013 #2


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    A better wording (after "i.e.") would be that there exists i such that x belongs to Ai, etc.
  4. Jun 16, 2013 #3
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