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diff --git a/doc/documentation.tex b/doc/documentation.tex index ef80e9e..4ce0fb3 100644 --- a/doc/documentation.tex +++ b/doc/documentation.tex @@ -588,6 +588,13 @@ tensor specials are \gamma_{ij}$. \end{description} +By default, the basis with respect to which the tensor components are +given is supposed to be the (local) coordinate system given by the +grid, i.e., the coordinate directions are the ``natural'' directions +of the grid. It is possible to specify a different basis by declaring +a \emph{tensor basis}, which is the name of a grid function group +containing the coordinate system. + \subsection{Example Tensor Type Declarations} From CactusWave/WaveToy: |