A note on quasi-permutation representations of groups with two character degrees

摘要

In Behravesh (J. Lond. Math. Soc. (2) 55:251–260, 1997), we gave algorithms to calculate c(G), q(G) and p(G) for a finite group G. In this paper we will show that in groups with two character degrees we may have c(G) = q(G) ≠ p(G).