“…In real world applications, the information transmission among agents may not be continuous due to the unreliability of communications channels or the limited sensing ability of agents. Thus, discrete-time multi-agent systems have found widely applications and their dynamics have attracted a lot of research interest [3][4][5]8,17,19,23,24,29,30], in which each agent synchronously receives it neighbors' information at discrete time instants, where the synchrony means that all agents update their states using the information of its neighboring agents at the same time. However, considering a central synchronizing clock may not be available and the communication topology is dynamically changing [25].…”