Some functions were renamed:
- SubgroupEmbeddingCoefficients -> SubgroupCoefficients
- FindAllEmbeddings -> Embeddings
- PermutationSymmetryOfTensorParts -> PermutationSymmetry
- DrawYoungDiagram -> YoungDiagram
- CalculateSnBranchingRules -> SnBranchingRules
This version of the program is described in the paper GroupMath: A Mathematica package for group theory calculations, arXiv:2011.01764 [hep-th].
- The program now comes with a detailed built-in documentation.
- Several functions were added to the package, for example FindAllEmbeddings and MaximalSubgroups (please see the documentation for details).
- Improvements were made to some of the functions which already existed in earlier versions of GroupMath.
- It is now possible to use a simplified input format for representations of Lie groups (in many cases Dynkin coefficients are now unnecessary). For the representations with names $\boldsymbol{R}$ and $\overline{\boldsymbol{R}}$ (with no primes) it suffices to write R and -R, respectively. For example, previously the decomposition of $\boldsymbol{3}\times\boldsymbol{3}\times\overline{\boldsymbol{3}}$ in $SU(3)$ was calculated by writing ReduceRepProduct[SU3, {{1,0}, {1,0}, {0,1}}], but now it is also possible to do so with the code ReduceRepProduct[SU3, {3, 3, -3}].
