35 citations · 74 across the 22 of their papers we have counts for
4 papers · 2 filters
Maximum Zagreb Indices Among All p-Quasi k-Cyclic Graphs
A Ghalavand, A R Ashrafi
A simple connected graph G is called a p-quasi k-cyclic graph, if there exists a subset S of vertices such that |S|=p, G-S is k-cyclic and there is no a subset S` of V(G) such that…
No two Jellyfish graphs are L-cospectral and Q-cospectral
A. Z. Abdian, A. R. Ashrafi
In this paper, it is proved that the jellyfish graphs, a natural generalization of sun graphs, are both DLS and DQS.
First and Second Maximum of Randić Index Among all Cyclic Graphs of a Given Order
Ali Reza Ashrafi, Ali Ghalavand, Marzieh Pourbabaee
Suppose is a simple graph with edge set . The Randić index is defined as , where denotes th…
Laplacian Spectral Determination of Path-Friendship Graphs
A. Z. Abdian, A. R. Ashrafi, L. W. Beineke +1
A graph is said to be determined by the spectrum of its Laplacian matrix (DLS) if every graph with the same spectrum is isomorphic to . van Dam and Haemers (2003) conjecture…