2 problems

Let $K_n^4$ denote the complete balanced $4$-partite graph with $n$ vertices, and let $\operatorname{cr}(G)$ and $\overline{\operatorname{cr}}(G)$ denote respectively its ordinary…

Let $K_n^3$ denote the complete balanced tripartite graph with $n$ vertices, and let $\operatorname{cr}(G)$ and $\overline{\operatorname{cr}}(G)$ denote respectively the ordinary a…