[GAP Forum] XGAP

[Alexander Konovalov]

Dear Abdulhakeem Alayiwola,

As you wrote to me, you have Windows and you are interested in lattices of subgroups.

You can't install XGAP on Windows since it requires UNIX environment. For example, it
works on Linux and on OS X (needs XQuartz - https://www.xquartz.org/). For Windows
machine, one suggestion could be to install VirtualBox (https://www.virtualbox.org/)
and establish Linux virtual machine.

Hopefully the functionality you want will eventually appear in the GAP Jupyter 
interface (http://opendreamkit.org/activities/2016-08-03-gap-docker-jupyter/),
but it's not there yet.

However note that under Windows you should be able to compute the lattice of subgroups
using `LatticeSubgroups` and then explore it from GAP. Strictly speaking, XGAP
is needed to *visualise* the lattice of subgroups, but not to *compute* it. There
is also a GAP function `DotFileLatticeSubgroups ` that produces an input file for 
GraphViz (http://www.graphviz.org) which you will hopefully be able to used under 
Windows. See this example:

http://math.stackexchange.com/questions/1737962/subgroup-lattice-of-ut3-3/1737985#1737985 

Hope this helps
Alexander


> On 16 Nov 2016, at 10:07, abdulhakeem alayiwola <lovepgroups at gmail.com> wrote:
> 
> Dear forum,
> I have  tried to install XGAP but i have not been successful. I have tried
> the procedure available on GAP home page but yet unsuccessful, may be i
> didn't get language correct. Example:What is C Compiler? or how to
> configure the C Part. Can someone give me a simple guide on how to install
> XGAP as a first time user?
> 
> regards