 for all instants of time \(t \gt t_1\) and all subsets \(A\) and \(B\) of the system’s phase space. \(T_{t_1 \rightarrow t}B\) is the image of the set \(B\) under the dynamics of the system from \(t_1\) to \(t\). We refer to this postulate as the Probability Postulate (P), which is illustrated in Figure 8. Again, this condition is naturally generalised to cases of joint probabilities of \(A^t\) with multiple events \(B^{t_i}\). Granted (P) and its generalization, (R) reflects the dynamical properties of systems. 