[petsc-users] Question about eigenvalue and eigenvectors

김성익 ksi2443 at gmail.com
Sat Dec 24 04:19:41 CST 2022


Hello,


I tried to calculate the eigenvalues and eigenvectors in 3 by 3 matrix
(real and nonsymmetric).
I already checked the kspcomputeeigenvalues and kspcomputeritz.

However, the target matrix is just 3 by 3 matrix.
So I need another way to calculate the values and vectors.
Can anyone recommend other methods that are efficient for such small size
problems??

Thanks,
Hyung Kim
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