Fragmentation of ordered partitions and intervals.
Rate of growth of a transient cookie random walk.
Asymptotics of the allele frequency spectrum associated with the Bolthausen-Sznitman coalescent.
Recurrence and transience of a multi-excited random walk on a regular tree.
On the equivalence of some eternal additive coalescents
In this paper, we study additive coalescents. Using their representation as fragmentation processes, we prove that the law of a large class of eternal additive coalescents is absolutely continuous with respect to the law of the standard additive coalescent on any bounded time interval.
A stochastic min-driven coalescence process and its hydrodynamical limit
A stochastic system of particles is considered in which the sizes of the particles increase by successive binary mergers with the constraint that each coagulation event involves a particle with minimal size. Convergence of a suitably renormalized version of this process to a deterministic hydrodynamical limit is shown and the time evolution of the minimal size is studied for both deterministic and stochastic models.
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