I'm trying to understand a research paper but am facing a few difficulties, any help would be really appreciated.
A three state markov process with transition probabilities for states being:
0 --> -1 = λ(1-u)+s
0 --> 1 = λu
1 --> 0 = μ
I have a system of Kolmogorov Forward Equations
P'-1(t) = (λ(1-u)+s)P0(t)
P'0(t) = -(λ+s)P0(t)+ μP1(t)
P'1(t) = -μP1(t) + λuP0(t)
and I need to find a solution for P0(t) and P1(t) which is probability of the process being in either state 0/1 at time epoch 't'. I was wondering if anyone could go through how to obtain a solution for this system of equations. (If it is relevant the research paper utilises van Dantzigs' method of collective marks, however this is the one step which I do not follow)
Any relevant insight would be greatly appreciated!
Thanks.