2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/65507For interval polynomial matrices, we identify the minimal testing set, whose stability can guarantee that of the whole uncertain set. Our results improve the conclusions given by Kamal and Dahleh.Optimization and ControlDynamical Systems93D15Improved Results on Robust Stability of Multivariable Interval Control Systemstext