isolated element

We extend the definition of prime isolated invariant sets from flow to discrete dynamical systems, and show that any two prime isolated invariant

具体来说,论文首先将流上的素孤立不变集推广到离散系统的情形,证明了素孤立不变集的不交性;给出了利用Conley指标判断离散动力系统分支点存在的充分条件。