On the Turán Number of the Blow-Up of the Hexagon
On the Turán Number of the Blow-Up of the Hexagon
复制标题
关于六边形爆炸的图兰数
DOI:
10.1137/21m1428510
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Zolt'an L'or'ant Nagy
中科院分区:
文献类型:
--
作者:
Oliver Janzer;Abhishek Methuku;Zolt'an L'or'ant Nagy
The $r$-blowup of a graph $F$, denoted by $F[r]$, is the graph obtained by replacing the vertices and edges of $F$ with independent sets of size $r$ and copies of $K_{r,r}$, respectively. For bipartite graphs $F$, very little is known about the order of magnitude of the Turan number of $F[r]$. In this paper we prove that $\mathrm{ex}(n,C_6[2])=O(n^{5/3})$ and, more generally, for any positive integer $t$, $\mathrm{ex}(n,\theta_{3,t}[2])=O(n^{5/3})$. This is tight when $t$ is sufficiently large.
DOI:
10.1016/j.jctb.2020.12.003
发表时间:
2021
期刊:
Journal of Combinatorial Theory, Series B
影响因子:
--
作者:
Kang D
通讯作者:
Kang D