Struct la::EigenDecomposition
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pub struct EigenDecomposition<T> { // some fields omitted }
Eigenvalues and eigenvectors of a real matrix.
Ported from JAMA.
If A is symmetric, then A = V*D*V' where the eigenvalue matrix D is diagonal and the eigenvector matrix V is orthogonal. I.e. A = V * D * V' and V * V' = I.
If A is not symmetric, then the eigenvalue matrix D is block diagonal with the real eigenvalues in 1-by-1 blocks and any complex eigenvalues, lambda + i*mu, in 2-by-2 blocks, [lambda, mu; -mu, lambda]. The columns of V represent the eigenvectors in the sense that A*V = V*D, The matrix V may be badly conditioned, or even singular, so the validity of the equation A = V * D * V-1 depends upon V.cond().