13 citations · 18 across the 5 of their papers we have counts for
4 papers · 1 filter
On eccentricity version of Laplacian energy of a graph
Nilanjan De
The energy of a graph G is equal to the sum of absolute values of the eigenvalues of the adjacency matrix of G, whereas the Laplacian energy of a graph G is equal to the sum of the…
F-Index of Four Operations on Graphs
Nilanjan De
The F-index of a graph is defined as the sum of cubes of the vertex degrees of the graph which was introduced in 1972, in the same paper where the first and second Zagreb indices w…
F-index and coindex of some derived graphs
Nilanjan De
In this study, the explicit expressions for F-index and coindex of derived graphs such as a line graph, subdivision graph, vertex-semitotal graph, edge-semitotal graph, total graph…
Narumi-Katayama Index of Total Transformation Graphs
Nilanjan De
The Narumi-Katayama index of a graph was introduced in 1984 for representing the carbon skeleton of a saturated hydrocarbons and is defined as the product of degrees of all the ver…