On Jun 9, 2007, at 8:59 PM, Jason Grout wrote:

>
> William Stein wrote:
>> On 6/9/07, Jason Grout <[EMAIL PROTECTED]> wrote:
>>> I'm trying to do some symbolic calculations in a field, say GF 
>>> (3).  Is
>>> there a proper way to do this different than my example below?  The
>>> approach below of using a fraction field of a polynomial ring
>>> containing my variables over the field I'm working in seems to work
>>> mostly, but there are some errors.  Also, coerce(GF(3),1/2) doesn't
>>> seem to work--shouldn't it? GF(3)(1/2) works fine.
>>
>> Yes.  You've found a bug.  That the following simple example doesn't
>> work is a bug in Martin Albrecht's new incredibly fast
>> multivariate polynomial arithmetic code:
>>
>> sage: R.<x,y,z> = GF(3)[]
>> sage: R(1/2)
>> Traceback (most recent call last):
>> ....
>> TypeError: Cannot convert sage.rings.integer_mod.IntegerMod_int to
>> sage.rings.rational.Rational
>>
>> I'm sure Martin will fix it very soon.
>
> I tried filing a bug report (I figured that would be the appropriate
> thing to do at this point).  Does the trac software allow someone like
> me to login and post a bug report?  Or is there some other way that
> things like this are recorded and tracked?

Write William directly and ask for an account.  This is a necessary  
annoyance to avoid spam...

Justin

--
Justin C. Walker, Curmudgeon-At-Large
Institute for the Absorption of Federal Funds
--------
Some people have a mental horizon of radius zero, and
call it their point of view.
   -- David Hilbert
--------

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