====== InvertIndices ======
====Description====

  * ''InvertIndices'' inverts indices of tensors
  * ''%%InvertIndices[type]%%'' inverts indices of specified type
====Examples====
----
Invert indices of some expression
<sxh groovy; gutter: false>
println InvertIndices >> 'A_mn'.t
</sxh>
<sxh plain; gutter: false>
   > A^mn
</sxh>
<sxh groovy; gutter: false>
println InvertIndices >> 'A_mn*(p^m + q^m) + T_n'.t
</sxh>
<sxh plain; gutter: false>
   > A_m^n*(p^m + q^m) + T^n
</sxh>

----
Invert only indices of certain type:
<sxh groovy; gutter: false>
println InvertIndices[LatinLower] >> 'T_ABmn'.t
</sxh>
<sxh plain; gutter: false>
   > T_AB^mn
</sxh>
<sxh groovy; gutter: false>
println InvertIndices[GreekLower] >> 'A_{mn\\mu}*(p^m + q^m) + T_{n\\mu}'.t
</sxh>
<sxh plain; gutter: false>
   > A_{mn}^{\\mu}*(p^m + q^m) + T_{n}^{\\mu}
</sxh>

====See also====
  * Related guides: [[documentation:guide:applying_and_manipulating_transformations]], [[documentation:guide:list_of_transformations]], [[documentation:guide:programming_with_redberry|]]