[sage-support] Re: Calculate eigenvectors of symbolic matrix?

2009-03-10 Thread alex
i have trouble in collecting the eigenvectors to form an eigenvector matrix (in the order given by the eigenvalue computation...). How can i do this ? I have tried all matrix commands. THX. On Mar 4, 6:22 pm, Jason Grout jason-s...@creativetrax.com wrote: Alexander Hupfer wrote: thank you

[sage-support] Re: Calculate eigenvectors of symbolic matrix?

2009-03-10 Thread Jason Grout
alex wrote: i have trouble in collecting the eigenvectors to form an eigenvector matrix (in the order given by the eigenvalue computation...). How can i do this ? I have tried all matrix commands. For a normal matrix (i.e., not symbolic), you'll probably want to use the

[sage-support] Re: Calculate eigenvectors of symbolic matrix?

2009-03-04 Thread Jason Grout
sonium wrote: Hi, I have problems calculating the eigenvectors of a symbolic matrix. I tried: a,b = var('a'),var('b') M = matrix(SR,4,4,((a, 0, 0, 0), (0,-a,0,0), (0,0,a,0), (0,0,0,-a))) M.eigenvectors_right() what results in: AttributeError: 'SymbolicArithmetic' object has no

[sage-support] Re: Calculate eigenvectors of symbolic matrix?

2009-03-04 Thread Alexander Hupfer
thank you for your quick reply. Just for sake of documentation: the output reads as [[[eigenvalue1, eigenvalue2],[multiplicity of EVal1, multiplicity of EVal2]], Eigenvect of EVal1,..., Eigenvect EVal1, Eigenvect of EVal2,..., Eigenvect of EVal2] On 4 Mrz., 12:44, Jason Grout

[sage-support] Re: Calculate eigenvectors of symbolic matrix?

2009-03-04 Thread Jason Grout
Alexander Hupfer wrote: thank you for your quick reply. Just for sake of documentation: the output reads as [[[eigenvalue1, eigenvalue2],[multiplicity of EVal1, multiplicity of EVal2]], Eigenvect of EVal1,..., Eigenvect EVal1, Eigenvect of EVal2,..., Eigenvect of EVal2] Interestingly,