P ( t ) = ( P i j ( t ) ) {\displaystyle P(t)={\big (}P_{ij}(t){\big )}} where each individual entry, P i j ( t ) {\displaystyle P_{ij}(t)\ } refers to the probability that state E i {\displaystyle E_{i}\ } will change to state E j {\displaystyle E_{j}\ } in time t {\displaystyle t\ } .