Kreer, Markus - In: Stochastic Processes and their Applications 49 (1994) 1, pp. 65-74
Methods of Hilbert space theory together with the theory of analytic semigroups lead to an alternative approach for discussing an analytic birth and death process with the backward equations gk = [lambda]k - 1gk - 1 - ([mu]k+[lambda]k)gk+[mu]k+1, k = 0, 1, 2, ..., where [lambda]- 1 = 0 = [mu]0....