F. Heydari

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20132021

most citedThe Prime Index Graph of a Group

2 citations · 3 across the 6 of their papers we have counts for

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math.CO2021

On the Signed Complete Graphs with Maximum Index

N. Kafai, F. Heydari, N. Jafari Rad +1

Let $Γ = (K_{n}, H^{-})$ be a signed complete graph whose negative edges induce a subgraph $H$ . The index of $Γ$ is the largest eigenvalue of its adjacency matrix. In this paper we stud…

math.CO2019

On the eigenvalues of some signed graphs

M. Souri, F. Heydari, M. Maghasedi

Let $G$ be a simple graph and $A (G)$ be the adjacency matrix of $G$ . The matrix $S (G) = J - I - 2 A (G)$ is called the Seidel matrix of $G$ , where $I$ is an identity matrix and $J$ is…