2 problems

Let $u=(u_k)_{k\geq 0}$ denote the limiting particle-density profile, where $u_k=u_k(t,x)$ is the density of particles carrying exactly $k$ mutations at time $t>0$ and spatial posi…

The model is a branching particle system for a population accumulating deleterious mutations, with typical type-distribution width $c\log(N)$ for some $c\in(0,1)$. Branching partic…