2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/64338This paper is concerned with the problem of finding a quadratic common Lyapunov function for a family of stable linear systems. We present gradient iteration algorithms which give deterministic convergence for finite system families and probabilistic convergence for infinite families.9 pagesOptimization and Control93D09; 90C25text