In this article, we prove that for any probability distribution $\mu$ on $\mathbb{N}$ one can construct a stationary version of the infinite-bin model --an interacting particle system introduced by Foss and Konstantopoulos-- with move distribution $\mu$. Using this result, we obtain a new formula for the speed of the front of infinite-bin models, as a series of positive terms. This implies that the growth rate $C(p)$ of the longest path in a Barak-Erd\H{o}s graph of parameter $p$ is analytic on $(0,1]$. 查看全文>>