What's wrong with :
sage: prod([(x-t[0])^t[1] for t in (x^2-26*x-9).roots(x)])
(x + sqrt(178) - 13)*(x - sqrt(178) - 13)
which stays in SR ?
HTH,
--
Emmanuel Charpentier
Le mercredi 3 juin 2015 04:33:48 UTC+2, Simon King a écrit :
>
> Hi Georg,
>
> On 2015-06-02, ggrafendorfer >
> wrote:
> >
sage: m = matrix([[2,-1,-1],[-1,2,-1],[-1,-1,2]])
sage: Q = ZZ^3/m.row_space()
sage: Q.0
(1, 0)
sage: Q.1
(0, 1)
sage: m = matrix([[3,-1,-1,-1],[-1,3,-1,-1],[-1,-1,3,-1],[-1,-1,-1,3]])
sage: Q = ZZ^4/m.row_space()
sage: Q.0
) failed:
AttributeError: 'sage.matrix.matrix_integer_sparse.Matrix_integ
http://www.sagemath.org/doc-html/en/faq/faq-usage.html which I reached
through Google search for something even has a nice thing that say
"SageMath Logo" :)
On Friday, June 5, 2015 at 11:46:03 AM UTC-4, David Perkinson wrote:
>
> http://www.sagemath.org/packages/standard/ gives a 404 error.
>
-
On Thursday, June 4, 2015 at 3:11:59 PM UTC-7, Michael Orlitzky wrote:
>
> > Given a vector $v$ and a matrix $A$ of dimension $n$, one would say that
> > $v$ is a cyclic vector of $A$ if the following set is linearly
> independent
> > $\{ v,Av,A^2v,..,A^{n-1}v \}$.
> >
> > Is there a way to
On Thursday, June 4, 2015 at 2:53:50 PM UTC-7, Phoenix wrote:
>
>
> Thanks!
>
> Is there otherwise any standard operation in SAGE to create such vectors?
>
>
sage: def elem(i,n):
: return VectorSpace( QQ, n ).basis()[i]
:
sage: elem( 1, 5 )
(0, 1, 0, 0, 0)
or if you need it to retu
On Friday, 5 June 2015 09:57:35 UTC+1, Kristoffer Ryhl-Johansen wrote:
>
> Sage cannot run directly on windows, you must use a linux virtual machine
> if you want to run sage on windows. Of course it doesn't have to be
> virtualbox by oracle, you can use any virtual machine software you want.
>
http://www.sagemath.org/packages/standard/ gives a 404 error.
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To post
2015-06-04 20:52:51 UTC+2, Phoenix:
>
> Does one have to a virtual box of Oracle to run SAGE on Windows?
>
Please write Sage rather than SAGE.
> I am currently on a Windows 8 machine.
> The sage-6.7.ova file that I am running through this virtual box is
> immensely slow!
>
What processor?
> var('x,y')
> assume([x > 0, y > 0, x > 2*y])
>bool(x > y)
> => False
I'm not familiar with the limitations of symbolic computation,
but the design is in my opinion completely broken,
or to say it more polite, unfortunate. This is an invitation for tons of
bugs...
(returning 'False' in cas
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Sage cannot run directly on windows, you must use a linux virtual machine
if you want to run sage on windows. Of course it doesn't have to be
virtualbox by oracle, you can use any virtual machine software you want.
If you want to use another virtualbox software, and you cant find an image
with sag
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