Showing papers by "Vlastimil Pták published in 1987"

TL;DR: In this paper, it was shown that the class of all n by n Bezoutians compatible with a nonzero polynomial of degree ⩽ n may be characterized by an intertwining relation as well as by four other conditions formulated in terms of the structure of these matrices.

TL;DR: In this paper, the intertwining matrices of n by n matrices are defined, and a characterization of testing matrices is given, where a matrix R is said to be a testing matrix if the fulfillment of the above relation already implies that R ϵ R ((n))( ) is a test matrix.