5 citations · 16 across the 7 of their papers we have counts for
4 papers · 1 filter
Topological indices of k-th subdivision and semi total point graphs
Nilanjan De
Graph theory has provided a very useful tool, called topological indices which are a number obtained from the graph with the property that every graph isomorphic to , va…
F-index of graphs based on new operations related to the join of graphs
Prosanta Sarkar, Nilanjan De, Anita Pal
The forgotten topological index or F-index of a graph is defined as the sum of degree cube of all the vertices of the graph. This index was introduced by Gutman and Trinajestić mor…
F-index of graphs based on four operations related to the lexicographic product
Nilanjan De
The forgotten topological index or F-index of a graph is defined as the sum of cubes of the degree of all the vertices of the graph. In this paper we study the F-index of four oper…
Hyper Zagreb Index of Bridge and Chain Grpahs
Nilanjan De
Let G be a simple connected molecular graph with vertex set and edge set . One important modification of classical Zagreb index, called hyper Zagreb index is d…