All Ramsey critical graphs for a large tree versus $t{K}_m$

Zhiyu Cheng, Zhidan Luo, Pingge Chen

Let $H,H_1$ and $H_2$ be graphs, and let $H\to (H_1,H_2)$ denote that any red-blue coloring of $E(H)$ yields a red copy of $H_1$ or a blue copy of $H_2$. The…