5 papers
On the structure of the character degree graphs having diameter three
Silvio Dolfi, Roghayeh Hafezieh, Pablo Spiga
The structure of the character degree graphs , i.e. the prime graphs on the set of the irreducible character degrees of a finite group , such that is…
On the permutation automorphisms of binary cubic codes
Murat Altunbulak, Fatma Altunbulak Aksu, Roghayeh Hafezieh +1
A binary linear code whose permutation automorphism group has a fixed point free permutation of order is called a binary cubic code. The scope of this paper is to investigate t…
Involutory permutation automorphisms of binary linear codes
Fatma Altunbulak Aksu, Roghayeh Hafezieh, İpek Tuvay
We investigate the properties of binary linear codes of even length whose permutation automorphism group is a cyclic group generated by an involution. Up to dimension or co-dimensi…
The influence of cut vertices and eigenvalues on character graphs of solvable groups
Roghayeh Hafezieh, Mohammad Ali Hosseinzadeh, Samaneh Hossein-Zadeh +1
Given a finite group , the character graph, denoted by , for its irreducible character degrees is a graph with vertex set which is the set of prime numbers that div…
An overview on the bipartite divisor graph for the set of irreducible character degrees
Roghayeh Hafezieh, Pablo Spiga
Let be a finite group. The bipartite divisor graph for the set of irreducible complex character degrees is the undirected graph with vertex set consisting of the prime numbers…