On Wed, Feb 4, 2009 at 7:52 AM, Nick Alexander <ncalexan...@gmail.com> wrote:
>
>
> On 4-Feb-09, at 6:06 AM, daveloeffler wrote:
>
>>
>> I've been doing some tinkering with the congruence subgroups code
>> (because I'm lecturing a course on modular forms, and I think it's a
>> nice idea that Sage should be able to do all the questions on my
>> problem sheets). As part of this, I'd like to split up the rather
>> large file sage/modular/congroup.py, which has definitions for five
>> different classes, into separate files in a subdirectory sage/modular/
>> congroups.

Go for it, but please don't break pickling.    If older congruence subgroups
don't unpickle, then e.g., all the data here will be broken:

http://sage.math.washington.edu/home/wstein/db/modsym/

 -- William

>
> I work with theta functions and Siegel modular forms and have some
> code for congruence subgroups of symplectic groups of higher
> dimension.  A general request: could you bear in mind the possibility
> of having more congruence subgroups in Sage in the future?  I'm not
> exactly sure what this will mean, but maybe constructors will be
> generalized, etc.
>
> Thanks!
> Nick
>
> >
>



-- 
William Stein
Associate Professor of Mathematics
University of Washington
http://wstein.org

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