因果态可定义为ϵ-机器的映射 <math>\epsilon{:}S\mapsto2^S</math>,<math>E = \{E_t\}_{t \in \mathbb{N} }</math>,<math>E_t = \epsilon( s_t )</math>,满足:<math> | 因果态可定义为ϵ-机器的映射 <math>\epsilon{:}S\mapsto2^S</math>,<math>E = \{E_t\}_{t \in \mathbb{N} }</math>,<math>E_t = \epsilon( s_t )</math>,满足:<math> |