Exact Values and Bounds for Ramsey Numbers of $C_4$ Versus a Star Graph

Luis Boza

We study Ramsey numbers of the form $R(C_4,K_{1,n})$. We determine the eight previously unknown values of $R(C_4,K_{1,n})$ for $n\le 38$. In particular, we show that $R(C_4,K_{1,27…