Work

The Sombor Index (Coindex) and Lanzhou Index (Coindex) of Some Graphs

Year: 2025

Type: article

Abstract: In this paper, motivated by the recently introduced topological indices—the Sombor index, Sombor coindex, and Lanzhou index, we define a new index—the Lanzhou coindex of a graph. Furthermore, we investigate the Sombor index (coindex) and the Lanzhou index (coindex) of tadpole graphs, wheel graphs, and two-dimensional grid graphs, as well as their paraline graphs.

Source: Axioms

DOI: 10.3390/axioms14030164

Authors: Raxida Guji, Mihrigul Wali

Institution: Xinjiang University of Finance and Economics

Language: English

Topic: Graph theory and applications

Subfield: Geometry and Topology

Field: Mathematics

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,896

Funders: Ministry of Education, Xinjiang University of Finance and Economics, Natural Science Foundation of Xinjiang