#6491: [with spkg, positive review pending] Modular Cohomology Rings of Finite
p-Groups
-------------------------------+--------------------------------------------
Reporter: SimonKing | Owner: SimonKing
Type: enhancement | Status: assigned
Priority: major | Milestone: sage-4.1.1
Component: optional packages | Keywords: cohomology ring finite p-group
Reviewer: | Author: Simon King
Merged: |
-------------------------------+--------------------------------------------
Comment(by wdj):
Replying to [comment:26 SimonKing]:
> There's news about licences:
>
> Michael Ringe kindly agreed to provide mtx-2.2.3 with a new licence "GPL
v2 or later", hence, he put a version mtx-2.2.4 on the download page, and
as much as I see it differs from mtx-2.2.3 only by a new COPYING file.
>
Good news!
> So, I guess that in the documentation of our package I should replace
all references to mtx-2.2.3 by a reference to mtx-2.2.4, and I should
provide the new original sources in the folder 'mtxoriginal/' of our
package.
>
> My questions:
> - Look at the folder 'src/mtx-2.2.3'. Does it suffice to rename that
folder to 'src/mtx-2.2.4' and replace the old COPYING file by the new one?
That seems fine.
> - Specifically: Is it a problem that we use files showing cvs (or svn?)
numbers that are different from those on the MeatAxe download page? For
example, the
I don't see how this is a problem.
> ''official'' 'zzz.c' from the download page starts with
> {{{
> /* ========================== C MeatAxe =============================
> Finite field arithmetic and common functions. `Small' version for
> field orders q <= 256. Originally based on the `hprout.c' written
> by Klaus Lux.
>
> (C) Copyright 1993 Michael Ringe, Lehrstuhl D fuer Mathematik,
> RWTH Aachen, Germany <[email protected]>
> This program is free software; see the file COPYING for details.
> ================================================================== */
>
>
> /* $Id: zzz.c,v 2.20 1995/06/22 13:19:45 mringe Exp $
> *
> * $Log: zzz.c,v $
> * Revision 2.20 1995/06/22 13:19:45 mringe
> * Teste, ob MeatAxeBinDir != 0
> *
> * Revision 2.19 1995/05/12 10:07:20 mringe
> * Benutze MeatAxeBinDir beim Aufruf von maketab.
> *
> * Revision 2.18 1994/11/28 16:38:00 mringe
> * Neue Namen: SFOpen() und SFSeek().
> *
> }}}
> while we have the corresponding file starting with
> {{{
> /* ========================== C MeatAxe =============================
> Finite field arithmetic and common functions. `Small' version for
> field orders q <= 256. Originally based on the `hprout.c' written
> by Klaus Lux.
>
> (C) Copyright 1993 Michael Ringe, Lehrstuhl D fuer Mathematik,
> RWTH Aachen, Germany <[email protected]>
> This program is free software; see the file COPYING for details.
> ================================================================== */
>
>
> /* $Id: zzz.c,v 1.2 1997/09/11 15:44:42 gap Exp $
> *
> * $Log: zzz.c,v $
> * Revision 1.2 1997/09/11 15:44:42 gap
> * New version 2.2.3. AH
> *
> * Revision 2.20 1995/06/22 13:19:45 mringe
> * Teste, ob MeatAxeBinDir != 0
> *
> * Revision 2.19 1995/05/12 10:07:20 mringe
> * Benutze MeatAxeBinDir beim Aufruf von maketab.
> }}}
>
> So, my question is: Must these file headers match in order to conform
with the licence? If this were the case, I had a lot of dull work to do...
>
> - My files start with a header such as
> {{{
>
#*****************************************************************************
> #
> # Cohomology Rings of Finite p-Groups
> #
> # Copyright (C) 2009 Simon A. King <[email protected]>
> #
> # Distributed under the terms of the GNU General Public License (GPL)
> #
> # 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 at:
> #
> # http://www.gnu.org/licenses/
>
#*****************************************************************************
> }}}
> Does this already mean that my code is ''correctly'' (whatever that
means) licenced under GPL? Or do I need to provide a COPYING file as well?
You should change "# Distributed under the terms of the GNU General
Public License (GPL)" to "# Distributed under the terms of the GNU
General Public License (GPL), version 2 or later (at your choice)" or
something like that.
If you don't specify the version of the GPL you use then it defaults to
the latest version (which is version 3 currently). You don't want that.
>
> Please excuse if these questions are stupid. But my impression is that
licences are taken serious, and I have ''no idea whatsoever'' on that
matter.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/6491#comment:27>
Sage <http://sagemath.org/>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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