In fact, the entropy of a system is concentrated on the entropy set, precisely, the supremum of the entropies over all entropy sets is just topological entropy of the whole system.

• 事实上，我们指出正熵系统的复杂性集中在系统的熵集上：动力系统熵集拓扑熵的上确界等于整个系统的拓扑熵。