tklab

Tensor Notation

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Tensor Notation

Gradient


\Phi_{,i} = \frac{\partial \Phi}{\partial x^i}


g^{im}\Phi_{,m}

Divergence


</p>
<pre> \mathrm{div} A^r = A^r_{,r}
</pre>
<p>


</p>
<pre> A^r_{,k} = \frac{\partial A^r}{\partial x^k}
   +
  \left\{
    \begin{array}{c}
      r \\
      m \, k
    \end{array}
  \right\}
  A^m
</pre>
<p>

Curl


</p>
<pre> C^i = \epsilon^{ijk} A_{k,j}
</pre>
<p>

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