F. Heydari

activity

20172021

most citedOn the intersection graph of ideals of a commutative ring

1 citations · 1 across the 3 of their papers we have counts for

collaborators

3 papers

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…

math.AC2017★ 1 cited

On the intersection graph of ideals of a commutative ring

F. Heydari

Let $R$ be a commutative ring and $M$ be an $R$ -module, and let $I (R)^{*}$ be the set of all non-trivial ideals of $R$ . The $M$ -intersection graph of ideals of $R$ , denoted by $G_M(R…