2 papers
math.CO2023
On Zagreb indices of graphs
Batmend Horoldagva, Kinkar Chandra Das
Let be the set of class of graphs of order . The first Zagreb index is equal to the sum of squares of the degrees of the vertices, and the second Zagre…
math.CO2023
On Sombor Index of Graphs
Batmend Horoldagva, Chunlei Xu
Recently, Gutman defined a new vertex-degree-based graph invariant, named the Sombor index of a graph , and is defined by $$SO(G)=\sum_{uv\in E(G)}\sqrt{d_G(u)^2+d_G(v)^2},…