Critical branching process
= Critical branching process
{title2=$m=1$}
A <Branching process> with <mean> offspring number one. In a continuous-time birth–death example with equal per-cell birth and death rates $\beta$, one initial individual has <Survival probability> $1/(1+\beta t)$ and <mean> size $1+\beta t$ <conditional probability>[conditional] on survival.