On Jun 16, 2009, at 3:10 PM, Mikie wrote:
>
> Yes, and as you can see it works great in sage command line. When I
> use it in a python script I get a syntax error for the period in
> R.<x>.
>
Clearly you are not using the preparser. What you could do is
x = QQ['x'].gen(0)
f = 2*x**2 - x
f.factor()
You can also do
sage: preparse("x = QQ['x'].0")
"x = QQ['x'].gen(0)"
to see something that'll work in pure Python (assuming the needed
imports).
- Robert
> On Jun 16, 12:30 pm, David Joyner <[email protected]> wrote:
>> Is this what you mean?
>>
>> sage: R.<x> = PolynomialRing(ZZ,"x")
>> sage: f = 2*x**2-x
>> sage: f.factor()
>> x * (2*x - 1)
>>
>>
>>
>> On Tue, Jun 16, 2009 at 11:12 AM,
>> Mikie<[email protected]> wrote:
>>
>>> When I use Sage to factor lets say 2*x**2-x it factors the 2 out
>>> and
>>> leaves a fraction in the expression. I would like to have it not
>>> factor the polynomial unless their is an integer factor. By the
>>> way I
>>> have created a Twisted API that works.
>>
>>> On Jun 15, 4:51 pm, William Stein <[email protected]> wrote:
>>>> On Mon, Jun 15, 2009 at 10:54 PM,
>>>> Mikie<[email protected]> wrote:
>>
>>>>> Is there anyway to get the factor function to factor an expression
>>>>> without using QQ['x'].0? I want just integer factors.
>>
>>>> I don't understand what you mean by "integer factors"? Can you
>>>> give an example?
>>
>>>>> I have created a Twisted server using Sage to do calculations
>>>>> from a
>>>>> form.
>>>>> When I put QQ['x'].0 into the sage script I get a systax on the
>>>>> period. It does work from the command line.
>>>>> Thanx
>>
>>>> --
>>>> William Stein
>>>> Associate Professor of Mathematics
>>>> University of Washingtonhttp://wstein.org- Hide quoted text -
>>
>> - Show quoted text -
> >
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