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What does the superscript "d" mean in the differential?

  1. Oct 25, 2017 #1
    1. The problem statement, all variables and given/known data


    I as just hoping someone could help me parse the notation here. What does the superscript "d" mean in the differential of the integral?

  2. jcsd
  3. Oct 25, 2017 #2
    I believe it's the dimension of the integral. For example, in three dimensions ##d=3##.
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