3 papers
math.CO2026
The Domination Reciprocal Mean Square Index
Meysam Taheri-Dehkordi
We introduce the Domination Reciprocal Mean Square index \(DRMS\), a new domination-degree-based topological index obtained by replacing the ordinary degree in the reciprocal mean…
math.GM2026
Sharp Bounds on Diminished Sombor Index
Meysam Taheri-Dehkordi, Amir Hossein Nokhodkar, Gholam Hossein Fath-Tabar
The Diminished Sombor index of a simple graph is a recently introduced degree-based topological index, defined as \[ DSO(G)= \sum_{uv\in E(G)} \frac{\sqrt{d_u^2+d_v^2}}…
math.CO2022
Star and Semi-Star Transformations in Fullerene Graphs
Meysam Taheri-Dehkordi
A perfect star packing in a graph G is a spanning subgraph of G whose every component is isomorphic to the star graph . A perfect star packing of a fullerene graph G is of…