Nice Integer Eigenvectors

03312015, 09:59 PM
Post: #3




RE: Nice Integer Eigenvectors
(03312015 12:55 PM)Han Wrote: The command eigenvects()  in lower case  gives the eigenvectors in rational form and works for larger sized matrices. You could probably write a simpler function that then converts rational vectors to a parallel integer vector (and apply gcd for smaller integers). WOW! That is a great improvement over the ole EIGENVV, why didn't anyone tell me about this command? But unfortunately it falls short  it seems to ignore repeated eigenvalues. eg. running it on 540 102 025 gives only one eigenvector (4,5,2) which corresponds to the eigenvalue 0. There are also two more eigenvalues: 5 and 5 for which there is one more eigenvector. My program gives (2,0,1) as well as (4,5,2). I've tried it on some other matrices with repeated eigenvalues too and it always ignores them!! Shame... 

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Messages In This Thread 
Nice Integer Eigenvectors  Mmmm  03262015, 02:38 PM
RE: Nice Integer Eigenvectors  Han  03312015, 12:55 PM
RE: Nice Integer Eigenvectors  Mmmm  03312015 09:59 PM

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