Ticket #8985: update COPYING.txt

See #8985.

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:

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)
blas
boehm_gc                             Permissive BSD and GPL
boost                                Boost Software License
bzip2                                BSD (customized)
cddlib                               GPL
cliquer                              GPL
clisp                                GPL
cvxopt                               GPL
cython                               Apache License
docutils                             Modified BSD
ecl                                  LGPL
eclib                                GPL
ecm                                  LGPL
gmp-ecm                              LGPL
ellsea                               GPL
extcode                              GPL
f2c                                  FIXME: unknown license
flint                                GPL
flintqs                              GPL
fortran (G95)                        GPL
freetype                             GPL
gap                                  GPL
gd                                   Custom (BSD-ish)
gdmodule                             Custom (BSD-ish)
genus2reduction                      GPL
gfan                                 GPL
ghmm                                 GPL
givaro                               GPL
gnuplotpy                            LGPL
gnutls                               LGPL and GPL
graphs                               FIXME: unknown license
gsl                                  GPL
iconv                                GPL
iml                                  GPL, Modified BSD (see below)
ipython                              Modified BSD
jinja                                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 --
lapack                               New BSD
lcalc (Rubinstein)                   GPL
libfplll                             LGPL
libgcrypt                            GPL
libgpg_error                         GPL
libm4ri                              GPL
libpng                               libpng license
linbox                               LGPL
matplotlib                           Modified Python license
maxima                               GPL
mercurial                            GPL
moinmoin wiki                        GPL
mpfi                                 GPL
mpfr                                 LGPL
mpir                                 LGPL
mpmath                               New BSD License
mwrank                               GPL
networkx                             BSD
ntl                                  GPL
numpy                                Modified BSD
omalloc                              GPL (part of Singular; see below)
opencdk                              GPL
palp                                 GPL
pari                                 GPL
pexpect                              MIT (or X11) License
pil                                  BSD
polybori                             GPL
polytopes_db                         GPL
pycrypto                             No restrictions
pygments                             Modified BSD
pynac                                GPL
pyopenssl                            GPL
pysqlite                             Modified BSD
python                               Python License
python_gnutls                        LGPL
quaddouble                           Modified BSD
R                                    GPL
ratpoints                            GPL
readline                             GPL
rubiks                               GPL and MIT
sage                                 GPL
sage_scripts                         GPL
sagenb                               GPL
sagetex                              GPL
scipy                                BSD
scipy_sandbox
    comprising: ARPACK               BSD-like
                delaunay             BSD-style
scons                                MIT (or X11) License
setuptools                           Python Software Foundation License or
                                     Zope Public License
simon-2descent                       GPL
singular                             GPL
sphinx                               Modified BSD
sqlalchemy                           MIT
sqlite                               Public Domain (no restrictions)
symmetrica                           Public Domain as advertised on
                                     its website
sympow                               Modified BSD
sympy                                New 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:

=========================================================================

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.

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  1. 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.

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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.

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 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.

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:

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:

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/)

================================================================================

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,

* The origin of this software must not be misrepresented; you must not claim

* Altered source versions must be plainly marked as such, and must not be

* The name of the author may not be used to endorse or promote products

================================================================================

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,

* The origin of this software must not be misrepresented; you must not claim

* Altered source versions must be plainly marked as such, and must not be

* The name of the author may not be used to endorse or promote products

================================================================================

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

Undergraduate Student Projects

================================================================================

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.

================================================================================

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 <[email protected]>.

Copyright (c) 2001 Janko Hauser <[email protected]> and Nathaniel Gray <[email protected]>.

All rights reserved.

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.
    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

The Chemical Development Kit

AElfred

SAX

Acme Image encoders

JPEG Encoder

Java Analysis Studio

Unofficial Java3D vecmath package

JFA Icon collection

Jakarta 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

================================================================================

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 <[email protected]>. 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:

================================================================================

openssl:



================================================================================

pari: (http://pari.math.u-bordeaux.fr/) Copyright 2003-2005 the PARI group. PARI/GP is free software. It is released under GNU's General Public License, or GPL for short.

================================================================================

pexpect: (http://pexpect.sourceforge.net/) Copyright (c) 2005 Noah Spurrier MIT style license: Free, open source, and all that good stuff.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

================================================================================

pycrypto:

Distribute and use freely; there are no restrictions on further dissemination and usage except those imposed by the laws of your country of residence. This software is provided "as is" without warranty of fitness for use or suitability for any purpose, express or implied. Use at your own risk or not at all.

Incorporating the code into commercial products is permitted; you do not have to make source available or contribute your changes back (though that would be nice).

--amk (www.amk.ca)

================================================================================

pyopenssl:

(http://pyopenssl.sourceforge.net)

standard GPL license

================================================================================

pysqlite:

This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.

Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:

  1. 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.
  2. Altered source versions must be plainly marked as such, and must not be
    • misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

================================================================================

python: (http://www.python.org/) All Python releases are Open Source (see http://www.opensource.org for the Open Source Definition). Since version 2.0, Python releases have also been GPL-compatible. Please see

for further details.

================================================================================

R: (http://www.r-project.org/) R was initially written by Robert Gentleman and Ross Ihaka of the Statistics Department of the University of Auckland.

Since mid-1997 there has been a core group with write access to the R source, currently consisting of

Douglas Bates <[email protected]> John Chambers <[email protected]> Peter Dalgaard <[email protected]> Seth Falcon <[email protected]> Robert Gentleman <[email protected]> Kurt Hornik <[email protected]> Stefano Iacus <[email protected]> Ross Ihaka <[email protected]> Friedrich Leisch <[email protected]> Thomas Lumley <[email protected]> Martin Maechler <[email protected]> Duncan Murdoch <[email protected]> Paul Murrell <[email protected]> Martyn Plummer <[email protected]> Brian Ripley <[email protected]> Deepayan Sarkar <[email protected]> Duncan Temple Lang <[email protected]> Luke Tierney <[email protected]> Simon Urbanek <[email protected]>

plus Heiner Schwarte <[email protected]> up to October 1999 and Guido Masarotto <[email protected]> up to June 2003.

================================================================================

readline:

================================================================================

singular:

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 ( version 2 or version 3 of the License ).

The following software used with SINGULAR have their own copyright: the omalloc library, the readline library, the Gnu Multiple Precision Library (GMP), NTL: A Library for doing Number Theory (NTL), the Multi Protocol library (MP), the Singular-Factory library, the Singular-libfac library, and, for the Windows distributions the Cygwin DLL and the Cygwin tools (Cygwin), and the XEmacs editor (XEmacs).

Their copyrights and licenses can be found in the accompanying files which are distributed along with these packages. (Since version 3-0-3 of SINGULAR, all parts have GPL or LGPL as (one of) their licences.)

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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA (see GPL)

Please send any comments or bug reports to <[email protected]>.

If you want to be informed of new releases, please register yourself as a SINGULAR user by using the registration form on the SINGULAR homepage `http://www.singular.uni-kl.de'. If for some reason you cannot access the registration form, you can also register by sending an email to <[email protected]> with subject line `register' and body containing the following data:

For the citation of SINGULAR see `http://www.singular.uni-kl.de/how_to_cite.html', for information on how to cite Singular.

You can also support SINGULAR by informing us about your result obtained by using SINGULAR.

================================================================================

sqlite:

SQLite Copyright

SQLite is in the Public Domain

All of the deliverable code in SQLite has been dedicated to the public domain by the authors. All code authors, and representatives of the companies they work for, have signed affidavits dedicating their contributions to the public domain and originals of those signed affidavits are stored in a firesafe at the main offices of Hwaci. Anyone is free to copy, modify, publish, use, compile, sell, or distribute the original SQLite code, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means.

The previous paragraph applies to the deliverable code in SQLite - those parts of the SQLite library that you actually bundle and ship with a larger application. Portions of the documentation and some code used as part of the build process might fall under other licenses. The details here are unclear. We do not worry about the licensing of the documentation and build code so much because none of these things are part of the core deliverable SQLite library.

All of the deliverable code in SQLite has been written from scratch. No code has been taken from other projects or from the open internet. Every line of code can be traced back to its original author, and all of those authors have public domain dedications on file. So the SQLite code base is clean and is uncontaminated with licensed code from other projects.

================================================================================

sympow: (http://www.maths.bris.ac.uk/~mamjw/) copyright Mark Watkins. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

================================================================================

termcap: (http://hpux.connect.org.uk/hppd/hpux/Development/Libraries/termcap-1.3.1/) License: GNU General Public License V2

================================================================================ tachyon:

The licensed included with the software is original BSD, which is not GPL compatible. However, I wrote to John Stone, who responded: "John Stone <[email protected]> to: William Stein <[email protected]> date: Jun 1, 2007 8:06 PM subject: Re: Fwd: Tachyon3d License mailed-by: moline.ks.uiuc.edu

William,

Yes, I'll update the license for you and post a new version. Please give me a couple of days as it's not convenient for me to take care of this right now.

Cheers,


Copyright (c) 1994-2003 John E. Stone All rights reserved.

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

2. Redistributions in binary form must reproduce the above copyright

3. All advertising materials mentioning features or use of this software

4. The name of the author may not be used to endorse or promote products

THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.

================================================================================ termcap:

Copyright notice:

If you use the zlib library in a product, we would appreciate *not* receiving lengthy legal documents to sign. The sources are provided for free but without warranty of any kind. The library has been entirely written by Jean-loup Gailly and Mark Adler; it does not include third-party code.

If you redistribute modified sources, we would appreciate that you include in the file ChangeLog history information documenting your changes. Please read the FAQ for more information on the distribution of modified source versions.

================================================================================ twisted:

Their license is this:

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

================================================================================

zlib: GPL compatible according to

Copyright (C) 1995-2004 Jean-loup Gailly and Mark Adler

================================================================================

zodb3 : (http://www.zope.org/Wikis/ZODB/) Zope Public License

This is GPL compatible according to

Zope is made available under the Zope Public License. This license seeks to allow free use of Zope and its source given a few conditions for use.

Our goals are to allow Zope to flourish as an open source project while making sure that we get some credit for having originally developed Zope.

The 2.1 version of the license is reusable. It supports having a consistent license for Zope and third-party products without requiring 3rd-party developers to assign copyright to Zope Corporation.

It is important that add-on products for Zope be released under the ZPL. Why? Two reasons:

* The ZPL is a flexible license that supports both commercial and

* If Zope add-on products are released under the ZPL, then users of

Software can be released under multiple licenses. For example, software can be released under both the ZPL and the GPL.

We will update the Zope software to use ZPL 2.1. This does not change the rules for contributing to the Zope software repository. Contributions to the Zope repository will still be owned by "Zope Corporation and Contributors".

To use the ZPL 2.1 license, just include the license with your software and also include a separate copyright statement (sample).

We have updated to the 2.1 version. The license though, like Zope itself, is a work-in-progress. We would love to hear your ideas on the license. Please send your comments on the license to [email protected].

This license has received OSD branding. Zope Corporation is working to stay true to the spirit of the Open Source Definition and its stated rationales. This license has been confirmed as GPL compatible by the FSF.

================================================================================

ticket/8985 (last edited 2010-05-19 05:29:02 by Minh Nguyen)