SENSITIVITY OF THE EIGENVALUES OF A DEFECTIVE MATRIX
Jing Wu · 1983
This paper is concerned with the sensitivity of the eigenvalues of a defective matrix under small perturbations.The given estimate generalizes all special results of Wilkinson, Stewart,Bauer and Fike,when the eigenvalue is simple and when the matrix is nondefective, and interpretes the phenomenon indicated by Golub and Wilkinson for Multiple eigenvalues