On Mon, Jul 22, 2019 at 11:45 AM John Cremona <john.crem...@gmail.com> wrote:
>
>
>
>
> On Sun, 21 Jul 2019 at 16:06, 'Julien Puydt' via sage-devel 
> <sage-devel@googlegroups.com> wrote:
>>
>> Le 21/07/2019 à 13:19, John Cremona a écrit :
>> >
>> > On Sat, 20 Jul 2019 at 21:08, 'Julien Puydt' via sage-devel
>> > <sage-devel@googlegroups.com <mailto:sage-devel@googlegroups.com>> wrote:
>> >
>> >     Le 19/07/2019 à 16:41, John Cremona a écrit :
>> >
>> >     > Not written by me, just used by me to update Sage's optional package.
>> >     > William would remember who wrote it.
>> >
>> >     I crossed the build/pkgs/elliptic_curves and
>> >     src/sage/databases/cremona.py files and obtained the following build
>> >     script.
>> >
>> >
>> >     I'm a bit annoyed because the elliptic_curve pkg ships a 470M
>> >     cremona.db, and I get a 479M cremona.db ; but perhaps it's because I
>> >     pack everything (no bound on the genus : everything in the files!)?
>> >
>> > "genus" --> "conductor".  This would be explained (I think) by the fact
>> > that the shipped spkg goes up to conductor 400k while ecdata on github
>> > now goes up to 410k.  That's all.  I will soon have finished to 500k and
>> > then the spkg will presumably be around 500M.
>>
>> Yes, conductor.
>>
>> Could you add a nice LICENSE file to clarify things? I think it's public
>> domain since it's a list of mathematical objects... but I'd rather have
>> a nice file by the author to tell that :-P
>
>
> Certainly. I think that CC0 is most appropriate.  The significant part of the 
> repo is the data, not the code.  (The most important code used to compute 
> this data is in another repository, eclib; here there are just some utility 
> scripts).  But github does not list any CC licenses in its "add a license" 
> menu.  Any advice?

Nothing prevents one to add LICENSE.md (or LICENSE)  with any content
one sees fit.
Did you consider FDL, by the way?

>
>>
>>
>> Thanks,
>>
>> JP
>>
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