论文标题
偶数偶数偶数的新上限
New Upper Bound on Extremal Number of Even Cycles
论文作者
论文摘要
在本文中,我们证明$ \ text {ex}(n,c_ {2k})\ le(16 \ sqrt {5} \ sqrt {k \ log k} + k} + o(1))\ cdot n^{1 + 1 + 1/k} $。我们在其2017年出版物中使用的Bukh- jiang的方法进行了改进,从而减少了最著名的上限,以$ \ sqrt {5 \ log k} $降低。
In this paper, we prove $\text{ex}(n, C_{2k})\le (16\sqrt{5}\sqrt{k\log k} + o(1))\cdot n^{1+1/k}$. We improved on Bukh--Jiang's method used in their 2017 publication, thereby reducing the best known upper bound by a factor of $\sqrt{5\log k}$.