Final Considerations III
The requirements for the transition T_{i \rightarrow j} are
- A series of transitions must let us to get from any allowed state to any other by a finite series of transitions.
- The transitions cannot be grouped into sets of states, A, B, C ,... such that transitions from A go to B , B to C etc and finally back to A . With condition (a) satisfied, this condition will always be satisfied if either T_{i \rightarrow i} \neq 0 or there are some rejected moves.