KonstantinTikhomirov

A well-known conjecture of Burr and Erdős asserts that the Ramsey number $r(Q_n)$ of the hypercube $Q_n$ on $2^n$ vertices is of the order $O(2^n)$. In this paper, we show that $r(Q_n)=O(2^{2n−cn})$ for a universal constant $c>0$, improving upon the previous best-known bound $r(Q_n)=O(2^{2n})$, due to Conlon, Fox, and Sudakov.