Lanczos Iteration Method

[hoshang]

Hi all,
After tridiagonal matrix construction step, how one could get eigenvalues and eigenvectors?

 

[SWComposites]

as was stated for your other post on this subject in another forum, the answer can be found with a google search.

 

[hoshang]

as was stated for your other post on this subject in another forum, the answer can be found with a google search.

Did you find the answer with a google search? I didn't find any.
I posted this subject in Structural engineering forum and someone wrote:
Probably not the best question for the structural engineering forum. You might want to delete this thread and create a new one in the Finite Element Engineering Analysis forum... which tends to be more technical related to numerical methods.
Hopefully I started posting the subject here. If you like, I can post my step-by-step calculation, I got the tridiagonal matric. Now I'm stuck with the eigenvalue and eigenvector calculation.

 

[cowski]

After tridiagonal matrix construction step, how one could get eigenvalues and eigenvectors?

I copy & pasted your exact question into google and the following was the top result (it even includes FORTRAN code).

http://www.phys.uri.edu/nigh/NumRec/bookfpdf/f11-3.pdf