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arXiv 1808.01152math.CO
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汉明立方体的4-着色数

The number of 4-colorings of the Hamming cube

Jeff Kahn, Jinyoung Park

摘要:

设$Q_d$是$d$维超立方体,$N=2^d$是$d$维超立方体.我们证明了$Q_d$的(真)4-着色数是渐近的\[6e2^N,\],正如Engbers和Galvin在2012年所证明的那样.证明使用了信息论(熵)和起源于Sapozhenko在20世纪80年代工作的等周思想的组合。

英文摘要:

Let $Q_d$ be the $d$-dimensional hypercube and $N=2^d$. We prove that the number of (proper) 4-colorings of $Q_d$ is asymptotically \[6e2^N,\] as was conjectured by Engbers and Galvin in 2012. The proof uses a combination of information theory (entropy) and isoperimetric ideas originating in work of Sapozhenko in the 1980's.

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