Analysis of Some Topological Indices at Distance$-2$ of Carbon Nanosheet $HC_5C_7[h,c]$
Topological indices defined for the molecular graphs by Gutman and Trinajstić are based on the degree of the vertices which are at distance one. Analogous to this, the generalized topological indices based on the degree of the vertices which are at the distance $1\le l\le diam (G)$ is introduced. This extension aims...