Avoidance couplings on non‐complete graphs
Avoidance couplings on non‐complete graphs
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非完全图上的回避耦合
DOI:
10.1002/rsa.20999
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发表时间:
2021
影响因子:
1
通讯作者:
Podder, Moumanti
中科院分区:
文献类型:
--
作者:
Bates, Erik;Podder, Moumanti
A coupling of random walkers on the same finite graph, who take turns sequentially, is said to be anavoidance couplingif the walkers never collide. Previous studies of these processes have focused almost exclusively on complete graphs, in particular how many walkers an avoidance coupling can include. For other graphs, apart from special cases, it has been unsettled whether even two noncolliding simple random walkers can be coupled. In this article, we construct such a coupling on (i) anyd‐regular graph avoiding a fixed subgraph depending ond; and (ii) any square‐free graph with minimum degree at least three. A corollary of the first result is that a uniformly random regular graph onnvertices admits an avoidance coupling with high probability.
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DOI:
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发表时间:
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Combinatorics, Probability and Computing
影响因子:
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DOI:
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Springer Proceedings in Mathematics & Statistics
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发表时间:
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影响因子:
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