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n. A vector that is not rotated under a given linear transformation; a left or right eigenvector depending on context.

n. A right eigenvector; a nonzero vector such that, for a particular matrix , for some scalar which is its eigenvalue and an eigenvalue of the matrix.

"Σci ‰ fi, for some set {ci} of complex numbers, where fi, the so-called eigenvector of Q corresponding to possible value qi, is that state of S at t for which, when S is in that state, there is unit probability that Q has value qi. ["

Mathworld    eigenvectors    com    Eigenvector    article   

eigenvalue    eigendecomposition    eigenspace    eigenfunction   

latent vector    proper vector