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Covarient maxwell

  1. Feb 23, 2015 #1
    can some tell me why the second line follows from the first in the attachment

    thank you

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  2. jcsd
  3. Feb 23, 2015 #2


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    It doesn't. The two sides of the equation have different free indices.
  4. Feb 23, 2015 #3
  5. Feb 23, 2015 #4


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    For some reason they have mad a swap ##\mu\leftrightarrow\nu## in the second line...and also switch the order of the partial derivatives.
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