Spracherkennung für: .md vermutete Sprache: SPS {SPS[40] Delphi[38] Python[36]} [Methode: maximale Elemente, drei Dimensionen]
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# The GAP
4 package `lpres`
## Introduction
This is the package `lpres` written
for GAP
4. It provides a first
construction
of finitely
L-presented groups
and a nilpotent quotient
algorithm
for L-presented groups.
The features
of this package include
- creating an
L-presented group as new gap object,
- computing nilpotent quotients
of L-presented groups
and epimorphisms
from the
L-presented group onto its nilpotent quotients,
- computing the abelian invariants
of an
L-presented group,
- computing finite-index subgroups
and if possible their
L-presentation
- approximating the Schur multiplier
of L-presented groups.
There is a manual
in the subdirectory `doc` written
in plain TeX which
describes the functions available.
If you have found a bug
or any features missing please let me know
(Laurent Bartholdi, laurent.bartholdi@gmail.com)
## Contents
With this version you should have obtained the following files
and
directories:
README.lpres this file
init.g the file that initializes this package
read.g the file that reads
in the package
makedoc.g the file used
to compile the documentation
PackageInfo.g the file
for the new package loading mechanism
doc the manual
gap the GAP code
## Installation
Make sure that the GAP
4 packages Polycyclic
and FGA are installed. It
suffices
to unpack the package
in the `pkg` directory
and load the
package
from within gap using `LoadPackage(
"lpres");`.
## Test Files
The lpres package can be tested
with
ReadPackage(
"lpres",
"tst/testall.g");
## Compiling the Manual
If you obtained the package
from its git repository, you have
to compile
the manual.
For this, enter the directory
of lpres (the one containing
the file `makedoc.g`)
and run `gap makedoc.g`.
## BugFixes/Changes/Features Added
* Version
0.
1.
0:
- maintenance taken over
by Laurent Bartholdi