Gaiduk, T.N.; Sergeichuk, V.V.; Zharko, N.A.
(Algebra and Discrete Mathematics, 2005)
V.I. Arnold [Russian Math. Surveys, 26 (no. 2),
1971, pp. 29–43] gave a miniversal deformation of matrices of linear operators; that is, a simple canonical form, to which not only a
given square matrix A, but also the ...