GAP is distributed free of charge. You can obtain it via
give it away to your colleagues. GAP is not in the public domain,
however. In particular you are not allowed to incorporate GAP or
parts thereof into a commercial product.
If you get GAP, we would appreciate it if you could notify us, e.g.,
by sending a short e-mail message to
containing your full name and address, so that we have a rough idea of
the number of users. We also hope that this number will be large enough
to convince various agencies that GAP is a project worthy of
(financial) support. If you publish some result that was partly obtained
using GAP, we would appreciate it if you would cite GAP, just as
you would cite another paper that you used. Specifically, please
[S+ 97] Martin Sch"onert et.al. GAP -- Groups, Algorithms, and Programming. Lehrstuhl D f"ur Mathematik, Rheinisch Westf"alische Technische Hochschule, Aachen, Germany, sixth edition, 1997.Again we would appreciate if you could inform us about such a paper.
We distribute the full source for everything, the C code for the kernel, the GAP code for the library, and the LaTeX code for the manual, which has at present about 1600 pages. So it should be no problem to get GAP, even if you have a rather uncommon system. Of course, ports to non UNIX systems may require some work. We already have ports for IBM PC compatibles with an Intel processor under MS-DOS, Windows, or OS/2, for the Atari ST under TOS and Apple Macintosh using the CodeWarrior compiler. Note that about 8 MByte of main memory and about 20MB of disk space are required to run GAP. A full GAP installation, including all share packages and data libraries can use up to 100MB of disk space.
The easiest way to get GAP 3.4 for most users is probably via the
World Wide Web. The main GAP Web site is found at
There are three mirror sites updated automatically each night, at:
http://www.math.rwth-aachen.de/LDFM/GAP http://www.ccs.neu.edu/mirrors/GAP and http://wwwmaths.anu.edu.au/algebra/GAP/WWW.
At these sites you can browse this manual, download the system and contributed extensions, read past postings to the GAP forum, and find out about authors of and contributors to GAP, publications that cited GAP andGAP related events.
GAP 3.4 can also be obtained by anonymous ftp from the following servers.
ftp to the server closest to you, login as user
ftp and give your
full e-mail address as password. Remember when you transmit the files to
set the file transfer type to binary image, otherwise you will only
receive unusable garbage. Those servers will always have the latest
version of GAP available.
ftp directory contains the following files. Please check first
which files you need, to avoid transferring those that you don't need.
zooarchive approximately 18 MByte large.
zooarchive extractor, which should be used to unpack the distribution. The
utilssubdirectory contains ready compiled executables for common systems.
KERNELSfile tells you which executables are here.
SPLITfile tells you which archive contains what.
UTILSfile tells you which files are here.
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