Operators and Matrices · Volume 3, Issue 1 Block companion matrices, discrete-time block diagonal stability and polynomial matrices 03-05 Pages 111-124 DOI 10.7153/oam-03-05 Downloads Short PDF Full PDF PNG Authors Harald K. Wimmer Keywords Matrix polynomials block companion matrix zeros of polynomials root location discrete-time Lyapunov matrix equation diagonal stability systems of linear difference equations Subject classes 15A33 15A24 15A57 26C10 30C15 39A11