On Mar 28, 8:32 am, mark mcclure wrote:
> Having read the documentation on the
> server_pool option, I see that it "specifies that worksheet processes
> run as a separate user". I'm a bit unclear on exactly what that's
> supposed to mean but it makes me won
On Mar 27, 9:46 pm, gerhard wrote:
> The solution for me was to omit the serverpool=[...] argument
Thanks Gerhard! It is working now.
But... I'm still a bit nervous. Having read the documentation on the
server_pool option, I see that it "specifies that worksheet processes
run as a separate us
I've included below the exact command that I used to start the
notebook and the output logging the error. (I haven't bothered with
nohup yet.) Although not detectable to the user, the problem seems to
arise as soon as the user opens a new worksheet. That's when the line
conta
the server as a
daemon
process so that I can log out while the server still runs.
Mark McClure
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n its development. I believe the same
is true of Blas. Moler has long been on the directory board
of Netlib, which is certainly the largest repository of
freely available software for numerical analysis in
existence, and a number of other Mathworks employees are
involved with Netlib as well.
Mark
On Oct 5, 8:40 pm, Robert Bradshaw
wrote:
> Try replacing the airy function with both math.sqrt, and math.h's
> sqrt, and see what the timings are, which for benchmarking purposes
> should give you a good idea if it's really the airy function.
>
> If it is, I doubt we're going to be writing a
On Oct 5, 1:19 pm, Robert Bradshaw
wrote:
>
> you might want to call these functions in SciPy directly as C
> functions. (You'd have to look up the SciPy headers to see what to
> call them.)
That was my first thought, in fact. I'm not certain, but it appears
that
SciPy is ultimately calling
ode, you can view it
as a Sage notebook here:
http://sagenb.org/home/pub/1013/
Thanks,
Mark McClure
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On Jun 16, 2:36 am, Rado wrote:
> > Here, for example, is the Cayley graph of the alternating group A5:
>
> > A = AlternatingGroup(5)
> > G = Graph(A.cayley_graph())
> > s = G.graphviz_string()
> > f = open('graphfile.dot', 'w')
> > f.write(s)
> > f.close()
>
> Actually for this example graphviz'
, you should get a
an interpretable version of quite a complicated graph.
Mark McClure
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uld be able to use an image stored with
your sage worksheets easily enough.
Mark McClure
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cell. This adds
a TinyMCE editor window that, when saved, is HTML. You can
double click on a section of text to open it up in it's own editor.
Mark McClure
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lity as
Matlab, in this case. What I find particularly puzzling,
though, is that scipy.opitimize.brentq, raises an error
for this problem, at least when applied to the interval
[-1.0, 1.0]. On the other hand, brentq runs without
reporting a complaint when applied to the interval
[1.0, pi]. See
> > Mathematica returns the result in terms of Fresnel functions.
>
> Point taken. However, integrate(abs(sin(t*t)),t,0,3) is
> by definition (since sin(x)>0 in that interval) the
> Fresnel integral S(3),http://en.wikipedia.org/wiki/Fresnel_integral,
> and just renaming it doesn't make it a closed
e on the integral. I think I saw that on the Maxima
discussion group a bit ago.
Mark McClure
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enerally, x = u, y = (1-v)*g(u) + v*h(u) parameterizes the region
between the graphs of the functions g and h. Thus, you could
do your example like so:
(x,y,u,v) = var('x,y,u,v')
f(x,y) = 0.1*x;
parametric_plot3d([u,u*v,f(u,u*v)],
(u,
what to open a file with. This depends on your
preference settings and I guess it didn't happen in your
case.
I think there will be a nice clickable Mac App soon.
Have fun,
Mark McClure
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issue?
This looks like the issue I was having and Michael Abshoff fixed it
in the latest release, which is 3.3. I don't think that will be
released
in binary but the source code is available, if you can build it.
Supposedly, 3.4 will be out soon.
Mark McClure
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On May 23, 5:52 pm, "William Stein" <[EMAIL PROTECTED]> wrote:
> Why don't you do
>
> child.expect('sage: ')
Because, I was too focused on using child.after, instead of
child.before, but your suggestion works great; thanks for
that.
So I incorporated your suggestion and re-worked and expanded
my
On May 7, 2:41 am, Amir <[EMAIL PROTECTED]> wrote:
> Can I start a Sage session from C? I would need to pass commands, set
> and get variables, and cleanly terminate the session. I would like to
> do this as a mathlink module to call Sage from Mathematica.
As a fan of both Sage and Mathematica, I
On May 21, 1:07 pm, "William Stein" <[EMAIL PROTECTED]> wrote:
> Since I know a bit more about how to optimize code in Sage,
> I redid your function but using more tricks. The result draws
> the above in 0.09 seconds (yep!).
And Marshall wrote:
> Arg, you beat me to it. I have a solution that
On May 16, 2:44 am, Dan Pillone <[EMAIL PROTECTED]> wrote:
>
> Is there a way to plot x^x correctly?
A lovely article by Mark Meyerson entitled "The x^x Spindle"
appeared in Mathematics Magazine back in June of 96. The
article shows how to interpret the graph of x^x in 3-space,
using the complex
On May 9, 4:16 pm, Rose <[EMAIL PROTECTED]> wrote:
> No I am not sure I need Tuple(). I am trying to draw some polygons on
> the complex plane, so I put the coordinates of the vertex (I am not
> sure it is the good word) in a Turple().
> Do you think there is a better way to do that?
How about so
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