This package allows for computation with crossed modules; cat1-groups; morphisms of these structures; derivations of crossed modules and the corresponding sections of cat1-groups.
In October 2015 a new section on isoclinism of crossed modules was added.
Experimental functions for crossed squares and cat2-groups are now included.
- The 'XMod' package is distributed with the accepted GAP packages, see: https://www.gap-system.org/Packages/xmod.html
- It may also be obtained from the GitHub repository at: https://gap-packages.github.io/xmod/
The 'XMod' package is Copyright {\copyright} Chris Wensley et al, 1997--2017.
'XMod' is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
For details, see http://www.gnu.org/licenses/gpl.html
-
Unpack
xmod-<version_number>.tar.gzin thepkgsubdirectory of the GAP root directory. -
From within GAP load the package with:
gap> LoadPackage( "xmod" );
true
-
The file manual.pdf is in the `doc' subdirectory.
If you have a question relating to 'XMod', encounter any problems, or have a suggestion for extending the package in any way, please
- email:
c.d.wensley@bangor.ac.uk - or report an issue at: https://github.com/gap-packages/xmod/issues/new