5 papers
Finite groups with few character values
Sesuai Y. Madanha
A classical theorem on character degrees states that if a finite group has fewer than four character degrees, then the group is solvable. We prove a corresponding result on charact…
On the orders of vanishing elements of finite groups
Sesuai Y. Madanha
Let be a finite group and be a prime. Let denote the set of the orders of vanishing elements, be the subset of …
Average number of zeros of characters of finite groups
Sesuai Y. Madanha
There has been some interest on how the average character degree affects the structure of a finite group. We define, and denote by , the average number of zeros…
Zeros of primitive characters of finite groups
Sesuai Y. Madanha
We classify finite non-solvable groups with a faithful primitive irreducible complex character that vanishes on a unique conjugacy class. Our results answer a question of Dixon and…
On a question of Dixon and Rahnamai Barghi
Sesuai Y. Madanha
Let be a finite non-solvable group with a primitive irreducible character that vanishes on one conjugacy class. We show that has a homomorphic image that is either…