The XMod package provides functions for the computation with
It is loaded with the command
gap> RequirePackage( "xmod" );
XMod was originally implemented in 1997 using the GAP 3 language.
The first two parts have been converted to GAP 4.
The parts covering derivations; sections and actors will follow in due course.
Many of the function names have been changed during the conversion,
for example ConjugationXMod
has become XModByNormalSubgroup
.
InfoXMod V
In order that the user has some control of the verbosity of the XMod
package's functions, an InfoClass InfoXMod
is provided
(see Chapter Info Functions in the GAP Reference Manual for
a description of the Info
mechanism). By default, the InfoLevel
of
InfoXMod
is 0
; progressively more information is supplied by raising
the InfoLevel
to levels of 1
, 2
and 3
, e.g.
gap> SetInfoLevel( InfoXMod, 1); #sets the InfoXMod level to 1
XMod has been developed by
Please send bug reports, suggestions and other comments to the second of these e-mail addresses.
Additional information can be found on the Computational Discrete Algebra web site at
http://www.informatics.bangor.ac.uk/public/math/research/hdda/
Copyright copyright 2002 by Murat Alp and Chris Wensley.
XMod is subject to the GAP copyright regulations as detailed in the copyright notice in the GAP manual.
XMod manual