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Homework Help: Differential forms

  1. Nov 23, 2009 #1
    1. The problem statement, all variables and given/known data
    Hi all

    I can find a differential form defined on R2\{0,0}, which is closed but not exact, but is it possible to find a differential form defined on all R2, which is closed but not exact?
     
  2. jcsd
  3. Nov 23, 2009 #2

    HallsofIvy

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    Science Advisor

    No, it isn't. That is, essentially, Stoke's theorem.
     
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