How equations 5.3 and 5.4 proves that exactly j events by the time t. In CT3 we understood that if j is Poisson distribution then P(j)(t) = P(j-1)(t)*(lemda*t/j) but equation 5.3 says something different. isn't it ? Actually I did not understood that what is this proof is all about. Pl help me. Thank you.
