How to install “GroupTheory” package in Mathematica

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How to install “GroupTheory” package in Mathematica? I am using Mathematica v12.0, and I try to install “GroupTheory” via “Palettes –> Install Palette …”. But it does not work. Thank you very much.

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Qilin GUO Selected answer as best 22. December 2020
Qilin GUO

Now I find the correct way to install GTpack, see “Appendix D: Technical Remarks on GTPack” of the book “Group Theory in Solid State Physics and Photonics: Problem Solving with Mathematica” by Wolfram Hergert and R. Matthias Geilhufe.
If one want to remove a undesirable palettes, just run the following command in Mathematica to open the path of the palettes:
FileNameJoin[{$UserBaseDirectory, “SystemFiles”, “FrontEnd”,

To install GTPack you would need to choose “Application” as “Type of Item to Install”.

  1. Download and unzip GTPack
  2. Open Mathematica. Go to File -> Install…
  3. Type of Item to Install: “Application”
  4. Source: “From Directory”; Pick the downloaded GTPack Directory in the file explorer


(An alternative manual way of installing GTPack is explained here:

Qilin GUO Posted new comment 22. December 2020
Qilin GUO

Brilliant! Thank you very much!