Amjad E. Hamza

most citedOn the Maximum Sigma Index of k-Cyclic Graphs

4 citations · 4 across the 3 of their papers we have counts for

collaborators

3 papers

math.CO2023

On the Difference of Atom-Bond Sum-Connectivity and Atom-Bond-Connectivity Indices

Akbar Ali, Ivan Gutman, Izudin Redzepovic +3

The atom-bond-connectivity (ABC) index is one of the well-investigated degree-based topological indices. The atom-bond sum-connectivity (ABS) index is a modified version of the ABC…

math.CO2023

Harmonic-Arithmetic Index of (Molecular) Trees

Abeer M. Albalahi, Akbar Ali, Abdulaziz M. Alanazi +2

Let $G$ be a graph. Denote by $d_{x}$ , $E (G)$ , and $D (G)$ the degree of a vertex $x$ in $G$ , the set of edges of $G$ , and the degree set of $G$ , respectively. This paper proposes to…

math.CO2022★ 4 cited

On the Maximum Sigma Index of k-Cyclic Graphs

Akbar Ali, Abeer M. Albalahi, Abdulaziz M. Alanazi +2

Let $G$ be a graph with edge set $E (G)$ . Denote by $d_{w}$ the degree of a vertex $w$ of $G$ . The sigma index of $G$ is defined as $\sum_{uv \in E (G)} (d_{u} - d_{v})^{2}$ . A connected graph o…