Complete left tail asymptotic for supercritical multitype branching processes
Abstract
We derive a complete left-tail asymptotic series for the density of the martingale limit of a supercritical multitype Galton-Watson process in the Schr\"oder case. We show that the series converges everywhere, not only for small arguments. This is the first complete result regarding the left tails of multitype branching processes. A good, quickly computed approximation for the density will also be derived from the series.
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