Published online by Cambridge University Press: 14 July 2016
The present paper considers methods for computing moments connected with subcritical multitype branching processes. By stressing the interplay between moment and cumulant structure, it is possible to prove simultaneously the existence of the moments. The kinds of moments considered are those arising in (1) times to extinction, (2) ultimate numbers of particles starting from a single particle, and (3) equilibrium numbers of particles for subcritical processes experiencing immigration.
Research supported in part by the University of California, Los Angeles; NIH Research Career Development Grant K04 HD00307; and NRSA Training Grant GM 7191.