On Apr 6, 7:31 pm, William Stein wrote:
> On Fri, Apr 1, 2011 at 8:31 AM, VictorMiller wrote:
> > Is sagenb.org having problems? I tried to log on yesterday (and
> > today, just now), and it said that my username was unknown!
I have the same problem with the username
zieglerk
PPS: I am using sage-4.3.3 and OpenSUSE 11.1.
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Hi,
I'm preparing some function plots for a presentation and would finally
like to add labels and arrows to the axes. I achieve the latter by
sage: p = plot(sin(x), -3, 3)
sage: p.show(axes_labels=['$x$', '$y$'])
But oddly, there seems to be no option for the show-method of a plot
to add arrows
,
Konstantin
On Feb 18, 11:15 pm, zieglerk wrote:
> On Feb 18, 10:31 am, John Cremona wrote:
>
>
>
> > On Feb 18, 9:15 am,zieglerk wrote:
>
> > > I was pretty sure, that there was a method for polynomials to extract
> > > the coefficient of a certain
On Feb 18, 10:31 am, John Cremona wrote:
> On Feb 18, 9:15 am, zieglerk wrote:
>
>
>
> > I was pretty sure, that there was a method for polynomials to extract
> > the coefficient of a certain monomial (say x^2). But the method I
> > used for that before
>
>
I was pretty sure, that there was a method for polynomials to extract
the coefficient of a certain monomial (say x^2). But the method I
used for that before
R = PolynomialRing(QQ, 'x')
f = R.random_element(degree = 3)
f.coeff(x^2)
now returns the error
AttributeError: 'Polynomial_rational_dense
Hi,
I've experienced similar problems after upgrading to sage 4.3.2, but I
don't think it's a problem of sage-mode, but rather of sage itself,
since it persists, when running sage from the command line.
Interestingly only for some objects the problem arises.
R = PolynomialRing(QQ, 'x')
f = R.ran
I'm using sage from the command line (or more precisely through emacs
sagemode).
Let me ask the opposite question: How can I allocate *more* memory to
the sage process. Sometimes extensive calculations break of with an
"out of memory" message. (Or is this more an issue of my OS?)
As a footnote
Hi,
My problem is, how to transform a polynomial, say f(x)=x^2+1 into the
corresponding equation f(x)==0?
For example, I start with
R = PolynomialRing(ZZ,x)
f = R.random_element(degree = 3)
Then
f == 0
returns false. And that's a good thing, of course. But now I want to
solve f == 0 mod 7, t
Thanks, indeed this solved the problem in the example.
Unfortunately, there is still a problem, if the degree of both
polynomials U and V increases to, say d = 1024. Note that the degree
of the rational function P = U/V is still 0 and both poles (0 and 1)
are far enough outside of the range wher
Hi,
I have two monic polynomials U, V of equal degree d with integer
coefficients. Furthermore the second one is of particularly simple
form, namely with roots only at 0 and 1. I want to plot the value of
their quotient in the range from 2 to 15.
Evaluating the quotient for any specific x in th
o overwrite SAGE_ROOT environment variable
The extraction of the sage-script packages runs smoothly, but then
immediately two warnings/erros show up:
> cp: cannot stat
> `/home/zieglerk/8--software/math/sage/sage-4.2.1/sage-python': No such file
> or directory
> cp: cannot stat `/hom
Dear list,
Starting from a finite field, say
F = GF (16).
I want to consider a subfield, say
E = GF(4)
and have a list of all sub-vectorspaces of F, which are e.g. 1-
dimensional E-vectorspaces. The functions
FF = F.vector_space()
S = FF.subspaces(4)
seem to be a possible start. What seem
Hi,
>
> Even better, of course, is [a..b] and (a...b).
>
this seems quite intuitive and handy, but I haven't found the
documentation for both anywhere. Neither among the topic "lists" nor
when searching for "intervals".
Can you give me a hint.
Konstantin
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