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Diffstat (limited to 'doc/documentation.tex')
| -rw-r--r-- | doc/documentation.tex | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/doc/documentation.tex b/doc/documentation.tex index 4ce0fb3..d1ddc3b 100644 --- a/doc/documentation.tex +++ b/doc/documentation.tex @@ -567,10 +567,13 @@ currently known and supported: (More tensor type aliases are likely to be defined in the future.) In addition to the tensor type, one can also declare the \emph{tensor -weight} and a \emph{tensor metric}. The tensor weight specifies the -behaviour under transformations that change the volume element. The -tensor metric specifies what metric has to be used to raise or lower -indices for that quantity. + parity}, \emph{tensor weight}, and a \emph{tensor metric}. The +tensor parity (an integer) specifies the behaviour under reflections. +Scalars and polar vectors have a parity $+1$, pseudo scalars and axial +vectors have a parity $-1$. The tensor weight (a real number) +specifies the behaviour under transformations that change the volume +element. The tensor metric (a string) specifies what metric has to be +used to raise or lower indices for that quantity. Last but not least, a \emph{tensor special} can be defined for quantities that do not transform as tensor. The currently supported |