The general Zagreb coindices of Cylinders

Recently, the rst and second Zagreb coindices for graphs introduced. In this paper we de ne generally these indices as the general Zagreb coindices . We provecompute them Pn Cm and the line graph, the subdivision graph and the line graph of their subdivision graph.

کلیدواژه ها:

rst Zagreb coindices ، second Zagreb coindices ، line graph ، subdivision graph ، line graph of the subdivision graph