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COPYING.txt
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This file is about the copyright on Sage and all included components.
Sage is a compilation both of original Python, C, C++, and Cython code,
and of existing free mathematics-related software. All standard
components of sage (those included in sage-*.tar) are licensed under a
free open source license as defined at http://www.opensource.org/.
Every component of Sage except jsmath is licensed under a GPL v2 (or
later) compatible license.
REMARK: jsmath is licensed under the Apache license which is GPL v3 compatible,
but maybe not GPL v2 compatible. However, Sage doesn't have any link to jsmath
-- we just distribute it as source code and users run it in their browser.
Some of the code available in *optional* Sage packages (not included
in sage-*.tar) are licensed under more restrictive conditions.
* ORIGINAL SAGE LIBRARY CODE:
All original Sage code is distributed under the terms of the
GNU General Public License, either version 2 of the License, or
(at your option) any later version.
This code is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
The full text of the GPL is available below in this file. Details of
the licenses of the components of Sage are included below as well.
* LICENSES OF INCLUDED SOFTWARE:
SOFTWARE LICENSE
----------------------------------------------
atlas Modified BSD (see below)
bzip2 BSD (customized)
cddlib GPL
clisp GPL
cython GPL (pyrex has no restrictions)
ec Watkins (BSD-ish)
gmp-ecm LGPL
ellsea GPL
extcode GPL
flint GPL
flintqs GPL
freetype GPL
gap GPL
gd Custom (BSD-ish)
gdmodule Custom (BSD-ish)
genus2reduction GPL
gfan GPL
givaro GPL
gmp LGPL
gnuplotpy LGPL
gsl GPL
iml GPL, Modified BSD (see below)
ipython Modified BSD
ipython1 Modified BSD
jmol GPL (v2+)
jsmath Apache License 2.0 (see note below)
note: -- jsmath is never run by Sage or linked with Sage at runtime --
lcalc (Rubinstein) GPL
linbox LGPL
matplotlib Modified Python license
maxima GPL
mercurial GPL
moinmoin wiki GPL
mpfi GPL
mpfr LGPL
mwrank GPL
networkx LGPL
ntl GPL
numpy Modified BSD
omalloc GPL (part of Singular; see below)
palp GPL
pari GPL
pexpect MIT (or X11) License
pycrypto No restrictions
pyopenssl GPL
pysqlite Modified BSD
python Python License
quaddouble Modified BSD
readline GPL
R GPL
sage GPL
sage_scripts GPL
simon-2descent GPL
singular GPL
sqlite Public Domain (no restrictions)
sympow Modified BSD
tachyon3d Modified BSD (see below)
termcap GPL
twisted Custom (Modified BSD)
twistedweb2 MIT Free Software licence
weave SciPy License (=Modified BSD)
zlib Custom (Modified BSD)
zodb3 ZPL
CONTACT INFO:
William Stein; wstein@gmail.com;
http://www.sagemath.org
=========================================================================
GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Library General Public License instead.) You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
this service if you wish), that you receive source code or can get it
if you want it, that you can change the software or use pieces of it
in new free programs; and that you know you can do these things.
To protect your rights, we need to make restrictions that forbid
anyone to deny you these rights or to ask you to surrender the rights.
These restrictions translate to certain responsibilities for you if you
distribute copies of the software, or if you modify it.
For example, if you distribute copies of such a program, whether
gratis or for a fee, you must give the recipients all the rights that
you have. You must make sure that they, too, receive or can get the
source code. And you must show them these terms so they know their
rights.
We protect your rights with two steps: (1) copyright the software, and
(2) offer you this license which gives you legal permission to copy,
distribute and/or modify the software.
Also, for each author's protection and ours, we want to make certain
that everyone understands that there is no warranty for this free
software. If the software is modified by someone else and passed on, we
want its recipients to know that what they have is not the original, so
that any problems introduced by others will not reflect on the original
authors' reputations.
Finally, any free program is threatened constantly by software
patents. We wish to avoid the danger that redistributors of a free
program will individually obtain patent licenses, in effect making the
program proprietary. To prevent this, we have made it clear that any
patent must be licensed for everyone's free use or not licensed at all.
The precise terms and conditions for copying, distribution and
modification follow.
GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
under the terms of this General Public License. The "Program", below,
refers to any such program or work, and a "work based on the Program"
means either the Program or any derivative work under copyright law:
that is to say, a work containing the Program or a portion of it,
either verbatim or with modifications and/or translated into another
language. (Hereinafter, translation is included without limitation in
the term "modification".) Each licensee is addressed as "you".
Activities other than copying, distribution and modification are not
covered by this License; they are outside its scope. The act of
running the Program is not restricted, and the output from the Program
is covered only if its contents constitute a work based on the
Program (independent of having been made by running the Program).
Whether that is true depends on what the Program does.
1. You may copy and distribute verbatim copies of the Program's
source code as you receive it, in any medium, provided that you
conspicuously and appropriately publish on each copy an appropriate
copyright notice and disclaimer of warranty; keep intact all the
notices that refer to this License and to the absence of any warranty;
and give any other recipients of the Program a copy of this License
along with the Program.
You may charge a fee for the physical act of transferring a copy, and
you may at your option offer warranty protection in exchange for a fee.
2. You may modify your copy or copies of the Program or any portion
of it, thus forming a work based on the Program, and copy and
distribute such modifications or work under the terms of Section 1
above, provided that you also meet all of these conditions:
a) You must cause the modified files to carry prominent notices
stating that you changed the files and the date of any change.
b) You must cause any work that you distribute or publish, that in
whole or in part contains or is derived from the Program or any
part thereof, to be licensed as a whole at no charge to all third
parties under the terms of this License.
c) If the modified program normally reads commands interactively
when run, you must cause it, when started running for such
interactive use in the most ordinary way, to print or display an
announcement including an appropriate copyright notice and a
notice that there is no warranty (or else, saying that you provide
a warranty) and that users may redistribute the program under
these conditions, and telling the user how to view a copy of this
License. (Exception: if the Program itself is interactive but
does not normally print such an announcement, your work based on
the Program is not required to print an announcement.)
These requirements apply to the modified work as a whole. If
identifiable sections of that work are not derived from the Program,
and can be reasonably considered independent and separate works in
themselves, then this License, and its terms, do not apply to those
sections when you distribute them as separate works. But when you
distribute the same sections as part of a whole which is a work based
on the Program, the distribution of the whole must be on the terms of
this License, whose permissions for other licensees extend to the
entire whole, and thus to each and every part regardless of who wrote it.
Thus, it is not the intent of this section to claim rights or contest
your rights to work written entirely by you; rather, the intent is to
exercise the right to control the distribution of derivative or
collective works based on the Program.
In addition, mere aggregation of another work not based on the Program
with the Program (or with a work based on the Program) on a volume of
a storage or distribution medium does not bring the other work under
the scope of this License.
3. You may copy and distribute the Program (or a work based on it,
under Section 2) in object code or executable form under the terms of
Sections 1 and 2 above provided that you also do one of the following:
a) Accompany it with the complete corresponding machine-readable
source code, which must be distributed under the terms of Sections
1 and 2 above on a medium customarily used for software interchange; or,
b) Accompany it with a written offer, valid for at least three
years, to give any third party, for a charge no more than your
cost of physically performing source distribution, a complete
machine-readable copy of the corresponding source code, to be
distributed under the terms of Sections 1 and 2 above on a medium
customarily used for software interchange; or,
c) Accompany it with the information you received as to the offer
to distribute corresponding source code. (This alternative is
allowed only for noncommercial distribution and only if you
received the program in object code or executable form with such
an offer, in accord with Subsection b above.)
The source code for a work means the preferred form of the work for
making modifications to it. For an executable work, complete source
code means all the source code for all modules it contains, plus any
associated interface definition files, plus the scripts used to
control compilation and installation of the executable. However, as a
special exception, the source code distributed need not include
anything that is normally distributed (in either source or binary
form) with the major components (compiler, kernel, and so on) of the
operating system on which the executable runs, unless that component
itself accompanies the executable.
If distribution of executable or object code is made by offering
access to copy from a designated place, then offering equivalent
access to copy the source code from the same place counts as
distribution of the source code, even though third parties are not
compelled to copy the source along with the object code.
4. You may not copy, modify, sublicense, or distribute the Program
except as expressly provided under this License. Any attempt
otherwise to copy, modify, sublicense or distribute the Program is
void, and will automatically terminate your rights under this License.
However, parties who have received copies, or rights, from you under
this License will not have their licenses terminated so long as such
parties remain in full compliance.
5. You are not required to accept this License, since you have not
signed it. However, nothing else grants you permission to modify or
distribute the Program or its derivative works. These actions are
prohibited by law if you do not accept this License. Therefore, by
modifying or distributing the Program (or any work based on the
Program), you indicate your acceptance of this License to do so, and
all its terms and conditions for copying, distributing or modifying
the Program or works based on it.
6. Each time you redistribute the Program (or any work based on the
Program), the recipient automatically receives a license from the
original licensor to copy, distribute or modify the Program subject to
these terms and conditions. You may not impose any further
restrictions on the recipients' exercise of the rights granted herein.
You are not responsible for enforcing compliance by third parties to
this License.
7. If, as a consequence of a court judgment or allegation of patent
infringement or for any other reason (not limited to patent issues),
conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot
distribute so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you
may not distribute the Program at all. For example, if a patent
license would not permit royalty-free redistribution of the Program by
all those who receive copies directly or indirectly through you, then
the only way you could satisfy both it and this License would be to
refrain entirely from distribution of the Program.
If any portion of this section is held invalid or unenforceable under
any particular circumstance, the balance of the section is intended to
apply and the section as a whole is intended to apply in other
circumstances.
It is not the purpose of this section to induce you to infringe any
patents or other property right claims or to contest validity of any
such claims; this section has the sole purpose of protecting the
integrity of the free software distribution system, which is
implemented by public license practices. Many people have made
generous contributions to the wide range of software distributed
through that system in reliance on consistent application of that
system; it is up to the author/donor to decide if he or she is willing
to distribute software through any other system and a licensee cannot
impose that choice.
This section is intended to make thoroughly clear what is believed to
be a consequence of the rest of this License.
8. If the distribution and/or use of the Program is restricted in
certain countries either by patents or by copyrighted interfaces, the
original copyright holder who places the Program under this License
may add an explicit geographical distribution limitation excluding
those countries, so that distribution is permitted only in or among
countries not thus excluded. In such case, this License incorporates
the limitation as if written in the body of this License.
9. The Free Software Foundation may publish revised and/or new versions
of the General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the Program
specifies a version number of this License which applies to it and "any
later version", you have the option of following the terms and conditions
either of that version or of any later version published by the Free
Software Foundation. If the Program does not specify a version number of
this License, you may choose any version ever published by the Free Software
Foundation.
10. If you wish to incorporate parts of the Program into other free
programs whose distribution conditions are different, write to the author
to ask for permission. For software which is copyrighted by the Free
Software Foundation, write to the Free Software Foundation; we sometimes
make exceptions for this. Our decision will be guided by the two goals
of preserving the free status of all derivatives of our free software and
of promoting the sharing and reuse of software generally.
NO WARRANTY
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
REPAIR OR CORRECTION.
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Library General
Public License instead of this License.
================================================================================
atlas:
(http://math-atlas.sourceforge.net/)
Automatically Tuned Linear Algebra Software v3.8.0
(C) Copyright 1998 R. Clint Whaley
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions, and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. The name of the ATLAS group or the names of its contributers may
not be used to endorse or promote products derived from this
software without specific written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
`AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE ATLAS GROUP OR ITS CONTRIBUTORS
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
================================================================================
bzip2:
(http://www.bzip.org/)
Copyright © 1996-2005 Julian Seward.
This program, bzip2, the associated library libbzip2, and all documentation, are
copyright © 1996-2005 Julian Seward. All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are
permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* The origin of this software must not be misrepresented; you must not claim
that you wrote the original software. If you use this software in a
product, an acknowledgment in the product documentation would be appreciated
but is not required.
* Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
* The name of the author may not be used to endorse or promote products
derived from this software without specific prior written permission.
================================================================================
clisp:
(http://clisp.sourceforge.net/)
ANSI Common Lisp is a high-level, general-purpose programming language.
GNU CLISP is a Common Lisp implementation by Bruno Haible of Karlsruhe
University and Michael Stoll of Munich University, both in Germany.
It mostly supports the Lisp described in the ANSI Common Lisp standard.
It runs on most GNU and Unix systems (GNU/Linux, FreeBSD, NetBSD, OpenBSD,
Solaris, Tru64, HP-UX, BeOS, NeXTstep, IRIX, AIX and others) and on
other systems (Windows NT/2000/XP, Windows 95/98/ME) and needs only
4 MB of RAM.
It is Free Software and may be distributed under the terms of GNU GPL,
while it is possible to distribute commercial proprietary applications
compiled with GNU CLISP.
Added by wdj: Michael Stoll is now at International University Bremen.
================================================================================
cython:
(http://www.cython.org/)
Copyright Greg Ewing, Stefan Behnel, Robert Bradshaw, and William Stein
Python Software Foundation License
---
Cython is a language that makes writing C extensions for the Python language as
easy as Python itself. Cython is based on the well-known Pyrex, but supports
more cutting edge functionality and optimizations. Development of Cython is
mainly motivated by the needs of Sage.
================================================================================
ec:
Copyright Mark Watkins.
Redistribution and use in source and binary forms, with or without modification, are
permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* The origin of this software must not be misrepresented; you must not claim
that you wrote the original software. If you use this software in a
product, an acknowledgment in the product documentation would be appreciated
but is not required.
* Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
* The name of the author may not be used to endorse or promote products
derived from this software without specific prior written permission.
================================================================================
ellsea-1.0:
Copyright Christophe Doche and Sylvain Duquesne.
This is an implementation of the Schoof-Elkies-Atkin point counting algorithm
for elliptic curves, over the prime field F_p (up to about 300 bits).
This PARI-GP package was written in the course for the AREHCC project,
see http://www.arehcc.com/.
It is released under the GNU General Public License.
================================================================================
flint:
(http://www.flintlib.org/)
William Hart and David Harvey
Contributors
International Colleagues
* Jason Papadopoulos - Block Lanczos code for quadratic sieve and
multiprecision complex root finding code for polynomials.
Undergraduate Student Projects
* Tomasz Lechowski - Contributed some NTL and Pari polynomial profiling code
and researched algorithms for polynomials over finite fields. (Funded by
the Nuffield Foundation)
* Daniel Scott - Researched lazy and relaxed algorithms of Joris van der
Hoeven. (Funded by Warwick University's Undergraduate Research Scholars
Scheme)
* David Howden - Wrote code for computing Bernoulli numbers mod many primes,
including fast polynomial multiplication over Z/pZ specifically for the
task. (Funded by Warwick University's Undergraduate Research Scholars
Scheme)
================================================================================
gap:
(http://www.gap-system.org)
GAP is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version. For details, see the file
'GPL' in the 'etc' directory of the GAP distribution or see
The FSF's own site.
================================================================================
gd -- "The web site programmer's dynamic graphics generation tool":
(http://www.boutell.com/gd/)
Permission has been granted to copy, distribute and modify gd in any
context without fee, including a commercial application, provided that
this notice is present in user-accessible supporting documentation.
(The rest of the notice is in the gd spkg, which is a bzip2'd tarball
included in the Sage source distribution.)
================================================================================
gdmodule:
(http://newcenturycomputers.net/projects/gdmodule.html)
Permission granted for unlimited use, provided that the Quest Center
at Cold Spring Harbor Labs is given credit for the library in the
user-visible documentation of your software. If you modify gd, we ask
that you share the modifications with us so they can be added to the
distribution. See gd.html for details. (The rest of the notice is in
the package gdmodule spkg, which is a bzip2'd tarball included in the
Sage source distribution.)
================================================================================
genus2reduction:
(http://www.math.u-bordeaux.fr/~liu/G2R/)
Copyright Qing LIU. See PARI for the license terms.
================================================================================
gmp:
(http://www.swox.com/gmp/)
GMP is distributed under the GNU LGPL. This license makes the
library free to use, share, and improve, and allows you to pass
on the result. The license gives freedoms, but also sets firm
restrictions on the use with non-free programs.
GMP is part of the GNU project. For more information about the
GNU project, please see the official GNU web site.
================================================================================
iml:
They include the GNU GPLv2 copyright file in their distribution,
but the individual source files all have the modified BSD license
in them. So this code is probably really modified BSD.
================================================================================
ipython / ipython1:
(http://ipython.scipy.org/moin/)
"Unless indicated otherwise, files in this project are covered by a BSD-type
license, included below.
Individual authors are the holders of the copyright for their code and are
listed in each file.
Some files (DPyGetOpt.py, for example) may be licensed under different
conditions. Ultimately each file indicates clearly the conditions under which
its author/authors have decided to publish the code.
IPython license
---------------
IPython is released under a BSD-type license.
Copyright (c) 2001, 2002, 2003, 2004 Fernando Perez <fperez@colorado.edu>.
Copyright (c) 2001 Janko Hauser <jhauser@zscout.de> and Nathaniel Gray
<n8gray@caltech.edu>.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
a. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
b. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
c. Neither the name of the copyright holders nor the names of any
contributors to this software may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
DAMAGE."
================================================================================
Copyright 1998-2007 The Jmol Development Team
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA.
Complete source code for the Jmol application, the Jmol applet, and
surrounding utilities is available from http://www.jmol.org
This software uses several external libraries and resources:
JUnit
Used for unit testing. Distributed by the IBM Public License (see
doc/ibm.license.html). See http://www.junit.org/.
The Chemical Development Kit
Used for reading and writing CML and ShelX. Distributed by Lesser GNU Public
License
See http://cdk.sf.net/.
AElfred
Used for XML parsing. Distributed free and without warranty.
Copyright (C) 1997,1998 by Microstar Software Ltd.
See http://www.microstar.com/aelfred.html.
SAX
Used for event-based XML parsing. Distributed free and without warranty.
See http://www.megginson.com/SAX/.
Acme Image encoders
Used for exporting images in GIF and PPM formats. Distributed free and
without warranty. Copyright (C) 1996,1998 by Jef Poskanzer.
See http://www.acme.com/.
JPEG Encoder
Used for exporting images in JPEG format. Distributed free and without
warranty (see doc/jpegEncoder.license).
Copyright (c) 1998 James R. Weeks and BioElectroMech.
See http://www.obrador.com/essentialjpeg/.
Java Analysis Studio
Used for graphs. Distributed by the GNU Lesser General Public License
(see doc/lgpl.license), and requires providing the source code (see
http://jas.freehep.org/source.htm). See http://jas.freehep.org/.
Unofficial Java3D vecmath package
Used for linear algebra. Distributed free and without warranty.
Copyright (C) 1997,1998,1999 by Kenji Hiranabe.
See http://www.esm.co.jp/divisions/open-sys/java/vecmath/.
JFA Icon collection
Used for icons in menus and toolbars. Distributed free and without warranty.
Copyright (C) 1998 by Dean S. Jones.
See http://jfa.javalobby.org/projects/icons/
Jakarta Commons CLI
Used for parsing command line optinos. Distributed with The Apache Software
License, Version 1.1. Copyright (c) 1999-2001 The Apache Software Foundation.
See http://jakarta.apache.org/commons/cli/.
================================================================================
jsmath:
Jsmath is licensed under the Apache License, Version 2.0.
The Apache Software Foundation considers their license to be GPL v2
compatible... maybe, but the FSF evidently doesn't. Note that Sage
doesn't *link* with jsmath. Sage only uses jsmath by sending it to a
web browsers, which then run jsmath. I.e., the Sage program, which is
a web server, at no point actually runs or uses jsmath to do anything.
It is the web browser running on the client's computer that actually
runs jsmath. Thus GPL compatibility of the jsmath license is not
relevant to Sage.
* From the Apache website: "It is the unofficial position of The
Apache Software Foundation that the Apache license is compatible
with the GPL. However, the Free Software Foundation holds a
different position..."
(http://www.apache.org/foundation/licence-FAQ.html#GPL), and the FSF
writes (http://www.fsf.org/licensing/licenses/index_html) "This is a
free software license but it is incompatible with the GPL. The
Apache Software License is incompatible with the GPL because it has
a specific requirement that is not in the GPL: it has certain patent
termination cases that the GPL does not require. (We don't think
those patent termination cases are inherently a bad idea, but
nonetheless they are incompatible with the GNU GPL.)"
================================================================================
Lcalc:
(http://pmmac03.math.uwaterloo.ca/~mrubinst/L_function_public/CODE/)
copyright Michael Rubinstein
Lcalc is distributed under the GNU GPL.
================================================================================
matplotlib:
LICENSE AGREEMENT FOR MATPLOTLIB 0.90.0
--------------------------------------
1. This LICENSE AGREEMENT is between the John D. Hunter ("JDH"), and the
Individual or Organization ("Licensee") accessing and otherwise using
matplotlib software in source or binary form and its associated
documentation.
2. Subject to the terms and conditions of this License Agreement, JDH
hereby grants Licensee a nonexclusive, royalty-free, world-wide license
to reproduce, analyze, test, perform and/or display publicly, prepare
derivative works, distribute, and otherwise use matplotlib 0.90.0
alone or in any derivative version, provided, however, that JDH's
License Agreement and JDH's notice of copyright, i.e., "Copyright (c)
2002-2004 John D. Hunter; All Rights Reserved" are retained in
matplotlib 0.90.0 alone or in any derivative version prepared by
Licensee.
3. In the event Licensee prepares a derivative work that is based on or
incorporates matplotlib 0.90.0 or any part thereof, and wants to
make the derivative work available to others as provided herein, then
Licensee hereby agrees to include in any such work a brief summary of
the changes made to matplotlib 0.90.0.
4. JDH is making matplotlib 0.90.0 available to Licensee on an "AS
IS" basis. JDH MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, JDH MAKES NO AND
DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF MATPLOTLIB 0.90.0
WILL NOT INFRINGE ANY THIRD PARTY RIGHTS.
5. JDH SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF MATPLOTLIB
0.90.0 FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR
LOSS AS A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING
MATPLOTLIB 0.90.0, OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF
THE POSSIBILITY THEREOF.
6. This License Agreement will automatically terminate upon a material
breach of its terms and conditions.
7. Nothing in this License Agreement shall be deemed to create any
relationship of agency, partnership, or joint venture between JDH and
Licensee. This License Agreement does not grant permission to use JDH
trademarks or trade name in a trademark sense to endorse or promote
products or services of Licensee, or any third party.
8. By copying, installing or otherwise using matplotlib 0.90.0,
Licensee agrees to be bound by the terms and conditions of this License
Agreement.
================================================================================
maxima:
(http://maxima.sourceforge.net/)
Maxima is dedicated to the memory of William F. Schelter. On 6 October
1998 William F. Schelter was formally notified that he could distribute
DOE-MACSYMA upon terms of his choosing, in particular the GNU General
Public License: <http://www.ma.utexas.edu/users/wfs/maxima-doe-auth.gif>
Schelter proceed to distribute derived works under the GPL.
In the formal notification a request was made that a paragraph "should
be included in the GPL and should accompany other modifications,
enhancements or derivative works of your program." This paragraph is
transcribed below in honor of that request. Like the preamble it does
not form part of the license.
"Distribution of such derivative works is subject to the U.S. Export
Administration Regulations (Title 15 CFR 768-799), which implements the
Export Administration Act of 1979, as amended, and/or the International
Traffic in Arms Regulations, of 12-6-84, (Title 22 CFR 121-130), which
implements the Arms Export Control Act (22 U.S.C. 2728) and may require
license for export."
================================================================================
MPFR:
(http://www.mpfr.org/)
MPFR is free. It is distributed under the GNU Lesser General Public
License (GNU Lesser GPL). The library has been registered in France
by the Agence de Protection des Programmes under the number
IDDN FR 001 120020 00 R P 2000 000 10800, on 15 March 2000. This
license guarantees your freedom to share and change MPFR, to make sure
MPFR is free for all its users. Unlike the ordinary General Public License,
the Lesser GPL enables developers of non-free programs to use MPFR in their
programs. If you have written a new function for MPFR or improved an
existing one, please share your work!
================================================================================
mwrank:
(http://www.maths.nott.ac.uk/personal/jec/ftp/progs/)
copyright John Cremona
Mwrank is released under the GNU General Public License.
================================================================================
NTL:
(http://www.shoup.net/ntl/)
A Library for Doing Number Theory
Copyright (C) 1996-2005 Victor Shoup
The most recent version of NTL is available at http://www.shoup.net
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
This entire copyright notice should be placed in an appropriately
conspicuous place accompanying all distributions of software that
make use of NTL.
The above terms apply to all of the software modules distributed with NTL,
i.e., all source files in either the ntl-xxx.tar.gz or WinNTL-xxx.zip
distributions. In general, the individual files do not contain
copyright notices.
Note that the quad_float package is derived from the doubledouble package,
originally developed by Keith Briggs, and also licensed unger the GNU GPL.
The files quad_float.c and quad_float.h contain more detailed copyright
notices.
Note that the traditional long integer package used by NTL, lip.c, is derived
from---and represents an extensive modification of---
a package originally developed and copyrighted by Arjen Lenstra,
who has agreed to renounce any copyright claims on the particular
version of the long integer package appearing in NTL, so that the
this package now is covered by the GNU GPL as well.
Note that the alternative long integer package used by NTL is GMP,
which is written by Torbjorn Granlund <tege@swox.com>.
GMP is licensed under the terms of the GNU Lesser General Public License.
Note that NTL makes use of the RSA Data Security, Inc. MD5 Message
Digest Algorithm.
RSA MD5 Message Digest Algorithm License:
Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
rights reserved.
License to copy and use this software is granted provided that it
is identified as the "RSA Data Security, Inc. MD5 Message-Digest
Algorithm" in all material mentioning or referencing this software
or this function.
License is also granted to make and use derivative works provided
that such works are identified as "derived from the RSA Data
Security, Inc. MD5 Message-Digest Algorithm" in all material
mentioning or referencing the derived work.
RSA Data Security, Inc. makes no representations concerning either
the merchantability of this software or the suitability of this
software for any particular purpose. It is provided "as is"
without express or implied warranty of any kind.
These notices must be retained in any copies of any part of this
documentation and/or software.
================================================================================
numpy:
(http://numeric.scipy.org/)
Copyright (c) 2005, NumPy Developers
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following
disclaimer in the documentation and/or other materials provided
with the distribution.
* Neither the name of the NumPy Developers nor the names of any
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.