The package xTensor` is installed under the directory xAct/ containing all xAct` packages. This directory can be installed anywhere and loaded into Mathematica giving the full path of installation. However, there are two recommended places for installation of add-ons in Mathematica:
- For a single-user installation use:
- Linux: $HOME/.Mathematica/Applications/
- Windows: C:\Documents and Settings\USER\Program Data\Mathematica\Applications\
- Mac: /Users/USER/Library/Mathematica/Applications/
- For a system-wide installation use:
- Linux: /usr/share/Mathematica/Applications/
- Windows: C:\Documents and Settings\All Users\Program Data\Mathematica\Applications\
- Mac: /Library/Mathematica/Applications/
Using one of these directories there is no need to configure any path.
The loaded version of xTensor` is contained in the global variable $Version. xTensor` itself loads the package xPerm` of manipulations of large groups of permutations. The minimum version of xPerm` required is given by the variable $xPermVersionExpected. The loaded version of xPerm` is given by xPerm`$Version.
If there are error messages during the loading of xTensor`, it is possible to locate the origin of the error by setting $ReadingVerbose=True before reading the package. By default that variable is not set.
xTensor` is free software. It is copyrighted by the author (JMM) under the General Public License (see the file gpl.txt that you should have received along with this file, and in particular the ouptut of Disclaimer[]).
| Created by Mathematica (May 16, 2008) | |