On Wed, Apr 8, 2009 at 12:56 PM, Justin C. Walker <jus...@mac.com> wrote:
>
>
> On Apr 8, 2009, at 12:07 , gerhard wrote:
>
>> Print methods for matrices with subdivisions
>>
>> let M be a matrix over QQ:
>>    subdivisions are printed fine
>> over GF(2):
>>    M.get_subdivisions() shows the subdivisions are defined,
>>    but the print method does not know about them.
>
> Yup.  Most matrix classes seem to use a common method for printing,
> while the 'mod 2' matrix implementation has its own "stringify" method.
>
> There may be a good explanation for this, but commenting out the mod2
> method seems to have the right effect without damaging anything else.
> At least with minimal testing.
>
>> The show methods cannot handle subdivisions altogether.
>
> I'm not sure I understand.  For other than the mod 2 elements, show(X)
> produces an image of a subdivided matrix.  Do you mean just in the mod
> 2 case?
>
>> Are there any plans to enhance these printing methods?
>
> I think it qualifies as a bug, and I've created a Trac report for the
> problem:
>    <http://trac.sagemath.org/sage_trac/ticket/5714>
>
> Thanks for reporting this.

I made another related ticket, since subdivision lifting
is broken:

http://trac.sagemath.org/sage_trac/ticket/5716

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