title: Nonuniform exponential dichotomies in terms of Lyapunov functions for noninvertible linear discrete-time systems.
abstract: The aim of this paper is to give characterizations in terms of Lyapunov functions for nonuniform exponential dichotomies of nonautonomous and noninvertible discrete-time systems.
authors.affiliation: Department of Mathematics, University "1st December 1918" of Alba Iulia, 510009 Alba Iulia, Romania.
authors.forename: Ioan-Lucian
authors.initials: IL
authors.lastname: Popa
authors.forename: Mihail
authors.initials: M
authors.lastname: Megan
authors.forename: Traian
authors.initials: T
authors.lastname: Ceauşu
mesh_terms: D008962:Models, Theoretical; D017711:Nonlinear Dynamics