There Is Aone-To-One Correspondence Between the Set of Quadruples of Matricesdefiningsingular Linear Time-Invariant Dynamical Systems and a Subset of the Set Ofpolynomial Matrices. This Correspondence Preserves the Equivalence Relationsintroduced In Both Sets (Feedback-Similarity and Strict Equivalence): Twoquadruples of Matrices Are Feedback-Equivalent If, and Only If, the Polynomial Matrices Associated to Them Are Alsostrictly Equivalent.