Finite groups with few character values that are not character degrees

Sesuai Y. Madanha, X. Mbaale, Tendai M. Mudziiri Shumba

Let $G$ be a finite group and $\chi \in \mathrm{Irr}(G)$. Define $\mathrm{cv}(G)=\{\chi (g)\mid \chi \in \mathrm{Irr}(G),g\in G\}$, $\mathrm{cv}(\chi )=\{\chi (g)\mid g\in G\}$ and denote $…