论文标题

Bunkbed的猜想,用于完整的两部分图和相关类图的类别

Bunkbed conjecture for complete bipartite graphs and related classes of graphs

论文作者

Richthammer, Thomas

论文摘要

令$ g =(v,e)$为一个简单的有限图。 The corresponding bunkbed graph $G^\pm$ consists of two copies $G^+ = (V^+,E^+),G^- = (V^-,E^-)$ of $G$ and additional edges connecting any two vertices $v_+ \in V_+,v_- \in V_-$ that are the copies of a vertex $v \in V$.铺位的猜想指出,对于$ g^\ pm $上的独立债券渗透,对于所有$ v,w \ in v $,与$ v _-,w _- $相比,要连接$ v _- $更有可能连接。虽然这似乎非常合理,但到目前为止,鲜为人知的很少。最近,已证明了该猜想的完整图。在这里,我们给出了完整的两部分图的证明,完整图减去完整子图的边缘和对称完整的$ K $ - 分段图。

Let $G = (V,E)$ be a simple finite graph. The corresponding bunkbed graph $G^\pm$ consists of two copies $G^+ = (V^+,E^+),G^- = (V^-,E^-)$ of $G$ and additional edges connecting any two vertices $v_+ \in V_+,v_- \in V_-$ that are the copies of a vertex $v \in V$. The bunkbed conjecture states that for independent bond percolation on $G^\pm$, for all $v,w \in V$, it is more likely for $v_-,w_-$ to be connected than for $v_-,w_+$ to be connected. While this seems very plausible, so far surprisingly little is known rigorously. Recently the conjecture has been proved for complete graphs. Here we give a proof for complete bipartite graphs, complete graphs minus the edges of a complete subgraph, and symmetric complete $k$-partite graphs.

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