[sage-support] Re: Problem finding eigenvalues in sage

2008-11-06 Thread John H Palmieri
On Nov 6, 9:07 pm, "Mike Hansen" <[EMAIL PROTECTED]> wrote: > I'm not sure how to covert those sqrt expressions into what you want. > However, you can see that they are what you're expecting: > > sage: A = matrix([[-1,-1+I],[1,0]]) > sage: evs = A.eigenvalues(); evs > [(-sqrt(4*I - 3) - 1)/2, (sqr

[sage-support] Re: Problem finding eigenvalues in sage

2008-11-06 Thread Mike Hansen
I'm not sure how to covert those sqrt expressions into what you want. However, you can see that they are what you're expecting: sage: A = matrix([[-1,-1+I],[1,0]]) sage: evs = A.eigenvalues(); evs [(-sqrt(4*I - 3) - 1)/2, (sqrt(4*I - 3) - 1)/2] sage: map(CC, evs) [-1.00 - 1.00

[sage-support] Re: java plugin for ubuntu 8.04 on amd64

2008-11-06 Thread adrian
Hm I can give it a try. As a work around, is it possible to have the behaviour of jmol so that instead of being embeded in the webpage as an applet it launches it as it normally would? Thanks. -Adrian. On Nov 6, 7:13 pm, Dan Drake <[EMAIL PROTECTED]> wrote: > On Thu, 06 Nov 2008 at 04:42PM

[sage-support] Re: Problem finding eigenvalues in sage

2008-11-06 Thread Alex Ghitza
As far as I can tell, the problem is that you use the predefined i which is a symbolic constant rather than a numerical one. (Maybe someone else can elaborate on this.) Here are some ways you can get the right answer: 1. declare i explicitly to be a complex number: sage: A=matrix([[-1,-1+CC(i)]

[sage-support] Problem finding eigenvalues in sage

2008-11-06 Thread DJDANG
Hi everyone, I'm having this problem finding the correct eigenvalues of a matrix. I've tried the code with other problems and worked, but It doesn't work with this one. The exercise is this one: -Find the eigenvalues and eigenvectors of the matrix A=(matrix[[-1,-1+i],[1,0]]) When I do this probl

[sage-support] Re: java plugin for ubuntu 8.04 on amd64

2008-11-06 Thread Dan Drake
On Thu, 06 Nov 2008 at 04:42PM -0800, adrian wrote: > I have tried to find the plugin, and apparently the only one available > is the iced tea one, but the jmol applet does not work with it. There may not be any solution except to install the Intrepid version, which I think does work -- the proble

[sage-support] java plugin for ubuntu 8.04 on amd64

2008-11-06 Thread adrian
I have tried to find the plugin, and apparently the only one available is the iced tea one, but the jmol applet does not work with it. Any ideas? --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this gro

[sage-support] Re: Porting Sage to AIX

2008-11-06 Thread mabshoff
On Nov 6, 3:18 pm, Sameer <[EMAIL PROTECTED]> wrote: > Hi Michael, Hi Sameer, >    ParaTools, Inc. has ported SAGE successfully to AIX! We had to > rebuild the library and debug it further > but now I can say:> set path=($PET_HOME/pkgs/sage-3.1.1 $path) > > sage > > ---

[sage-support] Re: Porting Sage to AIX

2008-11-06 Thread Sameer
Hi Michael, ParaTools, Inc. has ported SAGE successfully to AIX! We had to rebuild the library and debug it further but now I can say: > set path=($PET_HOME/pkgs/sage-3.1.1 $path) > sage -- | SAGE Version 3.1.1, Release Date: 2

[sage-support] implicit_plot automatically fills?

2008-11-06 Thread john_perry_usm
Hullo, The most recent version I have of Sage (3.1.4) believes that I want my implicit plots filled. For example, implicit_plot(x^2+y^2-1,(x,-5,5),(y,-5,5)) gives a filled-in disc, not an open circle. This happens with open curves, too; check out implicit_plot(5*x^4-x^2-y^2,(x,-5,5),(y,-