Ordering Unicyclic Graphs with a Fixed Girth by Sombor Indices
P. Nithya, Suresh Elumalai, Selvaraj Balachandran, Mesfin Masre · match Communications in Mathematical and in Computer Chemistry · 2024
The Sombor index indicated by the symbol SO(G) is calculated by adding the contributions of each vertex to the total number of edges in G, while the reduced Sombor index SO red (G) refines this measure by discounting the contributions of pendant vertices, which have a degree of 1.