On Exponential Dichotomy of Variational Nonautonomous Difference Equations in Banach Spaces

摘要

In this paper we consider two concept of exponential dichotomy (uniform and nonuniform) for nonautonomous variational difference equations in Banach speces. Characterizations of these concepts are given. In addition, we prove a result about the robustness of the uniform exponential dichotomy property.