مشخصات پژوهش

Recently, the concept of uncertain set processesa was introduced. This process involves a sequence of uncertain sets that evolve over time. Various perspectives have been used to de¯ne the convergence of these processes. In this paper, we delve into these de¯nitions and examine how they relate to one another. We demonstrate that while some convergence concepts imply others, the reverse is generally not true. Furthermore, we propose a new measure of convergence and investigate its relationship with existing measures. Each of our ¯ndings is illustrated with simple examples.