A note on the Lyapunov equation for discrete linear systems in Hilbert space
Authors:
C. S. Kubrusly
Affiliation:
National Laboratory for Scientific Computation, 22290, Brazil
Catholic University, Rio de Janeiro 22453, Brazil
Abstract:
It is given a simple and unified new proof for the following well-known stability condition: an infinite-dimensional time-invariant discrete linear system is uniformly asymptotically stable if and only if the associate Lyapunov equation has a unique strictly positive solution. The proof is partially based on an application of Rota's model construction technique.