F-index of bridge and chain graphs


  • Nilanjan De Calcutta Institute of Engineering and Management




Topological Index, Vertex degree, bridge and chain graphs, graph operations, .


The F-index or “Forgotten topological index” of a molecular graph is defined as the sum of cubes of degrees of all the vertices of the graph. In this paper, we compute the F-index of bridge and chain graphs. Further using these derived results, the F-index of several classes of chemical graphs and nanostructures are computed.


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