Wonderland
There are a number of PC's running Linux (a free UNIX) in the physics computation lab in 304 E. Bridge (affectionately known as Wonderland ). It is usually possible to find a free console there. To get a Wonderland account, you need to talk to Chris Mach in 303 E. Bridge. Below are instructions on how to use GRTensorII in Wonderland.
Maple Version
You need to tell Maple where to find GRTensorII by copying the sample initialization files to your own directory. In Wonderland these files can be found in /home/users/Misc/ph236. Copy the file mapleinit into ~/.mapleinit (.mapleinit in your home directory), or copy the relevant lines into your existing .mapleinit. Copy grtensor.ini into whatever directory you intend to start Maple from. You can customize both files as you wish. You are now ready to start Maple by typing 'maple' to invoke the command-line version or 'xmaple' to start the X-Windows notebook version. The sample .mapleinit file starts up GRTensorII automatically--if you don't like that behavior, you can remove those two lines and type them in by hand when you want to use it.
A copy of the GRTensorII manual has been placed in Wonderland.
Mathematica Version
GRTensorII is only available for Mathematica version 3. Since version 4 is the default in Wonderland, you will have to type 'mathematica3' to get version 3. Once in Mathematica v.3, type <<"grii/grt.m" to start the package.
Online documentation for the Mathematica version is available at http://www.astro.queensu.ca/~lake/webmma/new/grtmdoc/frame.html.
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