Tiling Tripartite Graphs with 3-Colorable Graphs
Tiling Tripartite Graphs with 3-Colorable Graphs
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用三色图平铺三部分图
DOI:
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发表时间:
2008
影响因子:
0.7
通讯作者:
Yi Zhao
中科院分区:
文献类型:
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作者:
Ryan R. Martin;Yi Zhao
For any positive real number $gamma$ and any positive integer $h$, there is $N_0$ such that the following holds. Let $Nge N_0$ be such that $N$ is divisible by $h$. If $G$ is a tripartite graph with $N$ vertices in each vertex class such that every vertex is adjacent to at least $(2/3+ gamma) N$ vertices in each of the other classes, then $G$ can be tiled perfectly by copies of $K_{h,h,h}$. This extends the work in [Discrete Math. 254 (2002), 289–308] and also gives a sufficient condition for tiling by any fixed 3-colorable graph. Furthermore, we show that the minimum-degree $(2/3+ gamma) N$ in our result cannot be replaced by $2N/3+ h-2$.
影响因子:
1.1
作者:
D. Kühn;Deryk Osthus
通讯作者:
D. Kühn;Deryk Osthus