On the Growth of a Ballistic Deposition Model on Finite Graphs
On the Growth of a Ballistic Deposition Model on Finite Graphs
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有限图上弹道沉积模型的增长
DOI:
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发表时间:
2020
期刊:
影响因子:
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通讯作者:
G. Braun
中科院分区:
文献类型:
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作者:
G. Braun
We revisit a ballistic deposition process introduced by Atar, Athreya and Kang. Let $mathcal{G}=(V,E)$ be a finite connected graph. We choose independently and uniformly vertices in $mathcal{G}$. If a vertex $x$ is chosen and the previous height configuration is given by $h=(h_y)_{y in V} in mathbb{N}_0^V$, the height $h_x$ is replaced by [ ilde{h}_x := 1 + max_{y sim x} h_y. ] We study asymptotic properties of this growth model. We determine the asymptotic growth parameter $gamma(mathcal{G} )$ for some graphs and prove a central limit theorem for the fluctuations around $gamma ( mathcal{G})$. We also give a new graph-theoretic interpretation of an inequality obtained by Atar et al..