On Thu, Jan 21, 2010 at 10:47 PM, Oscar Gerardo Lazo Arjona
wrote:
> I wish to improve animate so that it supports 3d plots
> (I want to make an animation of a moving 3d curve).
> I've been told that animate does this by joining several
> png files.
This bug was fixed at the last Sage Days. A fi
I wish to improve animate so that it supports 3d plots
(I want to make an animation of a moving 3d curve).
I've been told that animate does this by joining several
png files.
However, I've found no practical way to save pictures
of 3d plots. I want let's say i have:
sage: v=(sin(z+t),0,t)
sage:
On Thu, Jan 21, 2010 at 7:03 PM, Thomas Scofield wrote:
>
> I am creating notebooks to publish for my students to use in a spring
> course. Perhaps not surprisingly, I am interspersing commands, output of
> those commands, and explanatory text. The only way I know to create the
> latter is to sh
I am creating notebooks to publish for my students to use in a spring
course. Perhaps not surprisingly, I am interspersing commands, output
of those commands, and explanatory text. The only way I know to
create the latter is to shift-click to open a text cell. I discovered
a few days a
Stochastix wrote:
I have the following problem : I have two nested functions
a=lambda x: 2*x
b=lambda x: a(x)^2
Everything goes well as long as I want to compute the derivative of b
but how can I evaluate this derivative at x=2.
I tried
g=lambda x: diff(b(x),x)
g(x) returns 8*x as expected
bu
On Thu, 21 Jan 2010 16:36:47 -0800, William Stein wrote:
> Aren't those curves owned by some company though, and one can't use
> them without paying license fees? I can't believe I just wrote that
> sentence.
>
There's some info at
http://en.wikipedia.org/wiki/ECC_patents
It doesn't seem to
On Thu, Jan 21, 2010 at 4:28 PM, Alex Ghitza wrote:
> Hi Alasdair,
>
> My initial reaction is to point out that the NIST elliptic curves are
> over finite fields, while the Cremona database contains elliptic curves
> over the rational numbers.
>
> I don't see why we couldn't have a database with t
Hi Alasdair,
My initial reaction is to point out that the NIST elliptic curves are
over finite fields, while the Cremona database contains elliptic curves
over the rational numbers.
I don't see why we couldn't have a database with the NIST recommended
elliptic curves available in Sage, though.
I'm trying to find out if the NIST recommended elliptic curves
(appendix to http://csrc.nist.gov/publications/fips/fips186-3/fips_186-3.pdf)
are in the Cremona database. I can't seem to find anything online;
does anybody here know?
Thanks,
Alasdair
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Is there a way to change the generators used in the internal
representation of the unit group of a number field? I am currently
doing this by hand in an ad-hoc manner and it is very tedious, not to
mention prone to mistakes. To be concrete, consider the following:
sage: CyclotomicField(5).unit_g
On Jan 21, 8:49 pm, William Stein wrote:
> On Thu, Jan 21, 2010 at 12:14 PM, John Cremona wrote:
> > Advice needed on restarting a notebook server (now that I have
> > successfully built 4.3.1).
>
> > I guess that the admin for sagenb.org must do this all the time, so
> > all this must surely b
On Thu, Jan 21, 2010 at 12:14 PM, John Cremona wrote:
> Advice needed on restarting a notebook server (now that I have
> successfully built 4.3.1).
>
> I guess that the admin for sagenb.org must do this all the time, so
> all this must surely be easy, but I want to double check.
Well there were h
Cool.
I have to build the OS X 10.4 versions of Sage 4.3.1 right now, but
will have a look at that one. Thanks!
Cheers,
Georg
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For more o
Advice needed on restarting a notebook server (now that I have
successfully built 4.3.1).
I guess that the admin for sagenb.org must do this all the time, so
all this must surely be easy, but I want to double check. There are
several users with accounts -- how can I tell which are logged in? I
On Thu, Jan 21, 2010 at 8:24 AM, Mike Witt wrote:
> On 01/21/2010 08:16:22 AM, William Stein wrote:
>>
>> On Thu, Jan 21, 2010 at 7:50 AM, Mike Witt wrote:
>> > On 01/21/2010 07:35:13 AM, William Stein wrote:
>> >>
>> >> On Thu, Jan 21, 2010 at 7:06 AM, Mike Witt wrote:
>> >> > Is there a way to
I have cc'd this email to http://groups.google.com/group/sage-notebook
On Thu, Jan 21, 2010 at 6:00 AM, Nathan Carter wrote:
>
> Dear Sage users,
>
> I'm using Sage in a class this semester, and all my students are
> running Vista. I've instructed them to get sagenb.org accounts and to
> use Fir
On 01/21/2010 08:16:22 AM, William Stein wrote:
On Thu, Jan 21, 2010 at 7:50 AM, Mike Witt wrote:
> On 01/21/2010 07:35:13 AM, William Stein wrote:
>>
>> On Thu, Jan 21, 2010 at 7:06 AM, Mike Witt
wrote:
>> > Is there a way to specify default parameters for graphics? One
specific
>> > examp
On Thu, Jan 21, 2010 at 7:50 AM, Mike Witt wrote:
> On 01/21/2010 07:35:13 AM, William Stein wrote:
>>
>> On Thu, Jan 21, 2010 at 7:06 AM, Mike Witt wrote:
>> > Is there a way to specify default parameters for graphics? One specific
>> > example, is that I would like to specify that the default c
On 01/21/2010 07:35:13 AM, William Stein wrote:
On Thu, Jan 21, 2010 at 7:06 AM, Mike Witt wrote:
> Is there a way to specify default parameters for graphics? One
specific
> example, is that I would like to specify that the default color for
> function plots, lines, points, etc be 'black' ins
On Thu, Jan 21, 2010 at 6:39 AM, Thomas Scofield wrote:
>
> I do not recall having trouble with parametric_plot3d() before today. I'm
> still not having trouble except when I try using it to plot a surface.
> I am running Sage through a browser (Firefox) at the website www.sagenb.org,
> so I pres
On Thu, Jan 21, 2010 at 7:06 AM, Mike Witt wrote:
> Is there a way to specify default parameters for graphics? One specific
> example, is that I would like to specify that the default color for
> function plots, lines, points, etc be 'black' instead of 'blue'.
>
sage: plot.options
{'fillalpha': 0
Is there a way to specify default parameters for graphics? One specific
example, is that I would like to specify that the default color for
function plots, lines, points, etc be 'black' instead of 'blue'.
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To unsubscribe from t
I do not recall having trouble with parametric_plot3d() before today.
I'm still not having trouble except when I try using it to plot a
surface.
I am running Sage through a browser (Firefox) at the website www.sagenb.org
, so I presume it is the latest in programming. A simple command lik
Dear Sage users,
I'm using Sage in a class this semester, and all my students are
running Vista. I've instructed them to get sagenb.org accounts and to
use Firefox. All going well so far, until they try to shift-click
above a cell to get a TinyMCE editor. Many of them report the
following prob
Hi,
I think what Minh was trying to say is that these lines:
Stochastix wrote:
> sage: a=lambda x: alpha*x-mu1+mu2
> sage: f=lambda x: (a(x)*b-c+sqrt((a(x)*b-c)^2+4.0*a(x)*b*r*mu1))/(2*a
> (x)*mu1)
> sage: g=lambda x: (r+l-mu1*f(x))/mu2
> sage: prev=lambda x: f(x)/(f(x)+g(x))
> sage: k=lambda x:
This simple minded approach seems to work for me:
sage: a(x)=2*x
sage: b(x)=a(x)^2
sage: g(x)=diff(b(x),x)
sage: g(2)
16
-Alasdair
On Jan 21, 2:14 am, Stochastix wrote:
> I have the following problem : I have two nested functions
>
> a=lambda x: 2*x
> b=lambda x: a(x)^2
>
> Everything goes w
Thanks. Unfortunately, for my particular example, it didn't work as is
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