A Topological Embedding of the Binary Tree into the Square Lattice
A Topological Embedding of the Binary Tree into the Square Lattice
复制标题
二叉树在方格中的拓扑嵌入
DOI:
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发表时间:
2023
期刊:
影响因子:
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通讯作者:
Samuel Kelly
中科院分区:
文献类型:
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作者:
Samuel Kelly
We prove that for any finite tree $T$ with $n$ vertices and maximal degree $3$, there is a topological embedding of $T$ into the integer grid $Z^2$ which maps vertices to vertices and whose image meets at most $\frac{7}{3}n$ vertices. This recovers a weaker form of a result due to Valiant 10.5555/1963635.1963641 with stronger constants. We address question $7.7$ of arXiv:2112.05305, giving the first example of a pair of graphs $X,Y$ such that there is no regular map $X\to Y$ but the coarse wiring profile of $X$ into $Y$ grows linearly.
DOI:
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发表时间:
2021
期刊:
影响因子:
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作者:
東谷章弘;上山健太;Kenta Ueyama;上山健太;上山健太
通讯作者:
上山健太