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gap.mixer
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<?xml version="1.0" encoding="utf-8"?>
<mixer template="gwstart.tmpl">
<mixertitle>GAP System for Computational Discrete Algebra</mixertitle>
<p class="big">
<strong><em>Welcome to</em></strong>
</p>
<p class="bigcenter">
<strong>GAP - Groups, Algorithms, Programming -<br />
a System for Computational Discrete Algebra</strong>
</p>
<p class="center">
<!--
The first public release of GAP 4.5 was made on June 15th 2012
(see <a href="https://mail.gap-system.org/pipermail/forum/2012/003707.html">here</a>). <br /><br />
-->
The current version is
<a href="Releases/index.html">GAP <mixer var="relversion"/></a>
released on <mixer var="reldate"/>.
</p>
<br />
<h3>
What is GAP?
</h3>
<p>
GAP is a system for computational discrete algebra, with
particular emphasis on
<a href="/Doc/references.html">Computational Group Theory</a>.
GAP provides a
<mixer manual="Reference: The Programming Language">
programming language</mixer>, a library of thousands of
functions implementing
algebraic algorithms written in the GAP language as well
as large <a href="/Datalib/datalib.html">data libraries</a> of
algebraic objects. See also the
<a href="/Overview/overview.html">overview</a> and the description of the
<a href="/Overview/Capabilities/capabilities.html">
mathematical capabilities</a>.
GAP is used in
research and teaching for studying groups and their representations,
rings, vector spaces, algebras,
combinatorial structures, and more. The system, including source, is
distributed <a href="/Download/copyright.html#free">freely</a>.
You can study and easily modify or extend it for your special use.
</p>
<p>
In July 2008, GAP was awarded the <i>ACM/SIGSAM
Richard Dimick <a href="http://www.sigsam.org/awards/jenks/index.html">Jenks
Memorial Prize</a> for Excellence in
Software Engineering applied to Computer Algebra</i>.
</p>
<br />
<h3>
How to obtain GAP?
</h3>
<p>
The current release is GAP <mixer var="relversion"/>
and it can be obtained from our <a href="/Releases/index.html">downloads page</a>.
This website describes this release if not stated otherwise.
Changes from earlier versions are described in the
<a href="/Download/Updates/index.html">release history</a>.
</p>
<br />
<h3>
We are looking forward to hearing from you!
</h3>
<p>
We welcome contributions to GAP.
The GAP development repository is hosted on
<a href="https://github.com/gap-system/gap">GitHub</a>.
You may find some guidance on contributing via GitHub
<a href="https://github.com/gap-system/gap/blob/master/CONTRIBUTING.md">here</a>.
If you have any questions, or suggestions for GAP, the repository,
or documentation, feel free to contact us via the
<a href="https://mail.gap-system.org/mailman/listinfo/gap">open GAP development mailing list</a>
or submit an issue or a pull request on GitHub.
</p>
<p>
There is an <a href="Doc/doc.html">extensive documentation</a> advising
how to write a GAP code. Also there is a
<a href="/Packages/example.html">guidance</a> on developing a
<a href="/Packages/packages.html">GAP package </a> and its
<a href="/Contacts/submit.html">submission</a> to GAP.
</p>
<p>
The
<a href="/Contacts/People/people.html">GAP Group</a>
welcomes
<a href="/Contacts/contacts.html">contacts</a>
with the GAP users and offers support for them.
To keep up to date on GAP news (discussion of
problems, release announcements, bug fixes), we suggest you to
<a href="https://mail.gap-system.org/mailman/listinfo/forum">subscribe</a>
to the email-based
<a href="/Contacts/Forum/forum.html">GAP Forum</a>.
You may also follow GAP on <a href="https://twitter.com/gap_system">Twitter</a>.
</p>
<p>
Please
<a href="/Contacts/publicationfeedback.html">tell us</a> about your
use of GAP in research or teaching. We may well
want to provide a link to your work. If your work is published
then we ask you to
<a href="/Contacts/cite.html">cite</a> GAP like a
journal article or book.
We maintain a <a href="/Doc/Bib/bib.html">Bibliography</a> of
publications citing GAP. Please
<a href="/Contacts/publicationfeedback.html">help us</a>
keeping it up to date.
</p>
<br />
<h3>
Acknowledgements
</h3>
<p>
GAP has been and is developed by international
cooperation of many
<a href="/Contacts/People/people.html">people</a>, including user
contributions. We gratefully acknowledge all this help as well as some
<a href="/Contacts/funding.html">funding</a>.
GAP was started at
<a href="http://www.math.rwth-aachen.de/LDFM/">
Lehrstuhl D für Mathematik</a>, RWTH Aachen in
<a href="/Doc/History/preface_2.4.html">1986</a>. After
<a href="https://www.gap-system.org/ForumArchive/Neubuese.1/Joachim.1/GAP,_199.1/1.html">1997</a> the
development of GAP was coordinated in
<a href="https://www-circa.mcs.st-and.ac.uk/">St Andrews</a>.
At present, the
<a href="/Contacts/centres.html">GAP Centers</a> in
<a href="http://www.math.rwth-aachen.de/LDFM/">Aachen</a>,
<a href="https://www.tu-braunschweig.de/icm/algebra/">Braunschweig</a>,
<a href="http://www.math.colostate.edu/~hulpke/">Fort Collins</a> and
<a href="https://www-circa.mcs.st-and.ac.uk/">St Andrews</a>
are jointly coordinating the further development and maintenance
of GAP.
</p>
</mixer>