摘要：In this paper, we study the existence of chaos for a simple delay difference equation. By using the snap-back repeller theory, we prove that the system is chaotic in the sense of both Devaney and Li-Yorke when the parameters of this system satisfy some mild conditions. For illustrating the theoretical result, we give two computer simulations.
关键词：delay ; snap-back repeller ; chaos in the sense of Devaney ; chaos in the sense of Li-Yorke
