M. Khatami

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math.GR2021

Regular character-graphs whose eigenvalues are greater than or equal to -2

Mahdi Ebrahimi, Maryam Khatami, Zohreh Mirzaei

Let $G$ be a finite group and $Irr (G)$ be the set of all complex irreducible characters of $G$ . The character-graph $Δ (G)$ associated to $G$ , is a graph whose vertex set i…

math.GR2021

On the multiplicities of the character codegrees

Zeinab Akhlaghi, Mehdi Ebrahimi, Maryam Khatami

Let G be a finite group and ? be an irreducible character of G, the number cod(?) = jG : Let $G$ be a finite group and $χ$ be an irreducible character of $G$ , the number $ \co…