George,
I'ma lso very interested in what you are planning for extended modular
symbols in Sage. I'll be at the Bristol workshop too (I am visiting
Bristol this year). William, will you be there?
John Cremona
2008/6/1 William Stein <[EMAIL PROTECTED]>:
>
> On Sun, Jun 1, 2008 at 11:17 AM, Georg S. Weber
> <[EMAIL PROTECTED]> wrote:
>>
>> On 1 Jun., 17:21, "William Stein" <[EMAIL PROTECTED]> wrote:
>>> On Sun, Jun 1, 2008 at 7:57 AM, Georg S. Weber
>>>
>>> <[EMAIL PROTECTED]> wrote:
>>>
>>> > Hello Sage team,
>>>
>>> > great work so far, keep pushing forward!
>>> > I've got the following question:
>>>
>>> > Does a new SPKG, whose contents are licensed under GPLv3+ ("three
>>> > plus"),
>>> > fulfil your license requirement in order to become part of the Sage
>>> > core?
>>>
>>> No it does not.
>>>
>>> However, we intend to revisit this question -- by a vote of the JSAGE
>>> editorial board -- every few months, and it is very likely that
>>> at some point we will allow GPLv3+ code in the core. But right
>>> now new GPLv3+ code will not be added to the core of Sage.
>>>
>>> Do you have a specific project in mind?
>>>
>>> -- William
>>>
>>
>>
>> Wow,
>>
>> lightspeed-fast response time from both of you, I'm astonished!
>>
>> After several years of mathematical absence, since January I begin to
>> find some time.
>
> Welcome back. Are you that Essen student who I had dinner
> with once in Germany around 1997?
>
>> The first version of SAGE I installed was 2.9.2, and I fell in love
>> with it. Though, the
>> bits and pieces of code I currently have are plain C, with an
>> interface written in Magma.
>> (It's about fast computation of Hecke Operators via Heilbronn-Manin
>> matrices for large
>> primes p.) Gabor Wiese asked me whether he was allowed to "release it
>> into the wild"
>> on the Workshop: Computations with Modular Forms, 17 - 23 August 2008,
>> Bristol, UK,
>> I said yes, and we agreed that some polishing work should happen till
>> then.
>>
>> I'm in the middle of making a SPKG out of that code, but my interest
>> in SAGE is reaching
>> much further. There are quite some ideas for coding in the modular
>> symbols area that
>> finally want to get out of my head and into the shape of some software
>> for ten years now.
>> Apart from other obstacles, till SAGE entered the scene, there did not
>> seem a right place
>> where to put them. My other main area of interest are p-adic L-series,
>> same story here.
>>
>> The current solution to access my algos from within SAGE is to put
>> them in a dynamic lib and
>> call them from within a cython wrapper. The incredible advantage of
>> SAGE as compared with
>> closed-source solutions is that one simply may read and check out the
>> sources, how all the
>> others were doing things. (Till January, "Python" only was a sort of
>> snake for me ;-)
>
> Plus Cython totally rocks. It's absolutely shockingly amazingly good
> at what it does compared to everything else I've ever encountered.
> And it's only getting better (Cython development is very active right now).
>
> By the way, have you seen our upcoming workshops here:
> http://wiki.modform.org/
> There will be more, e.g., one in Spain in 2009.
>
> You should get involved in the above project.
>
> William
>
> >
>
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