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Dual to tensor

  1. Oct 3, 2005 #1
    In my lecture note about tensor it states:
    As element of integration over the hypersurface it is more convenient to use the 4-vector dS^i , dual to the tensor dS^ikl:

    dS^i = -1/6 e^iklmdS_klm ,dS_klm = e_iklmdS^i

    What is the meaning of dual?
    How the -1/6 comes from?

    yukyuk
     
  2. jcsd
  3. Oct 3, 2005 #2

    robphy

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