Open AccessNEIGHBORHOOD NIRMALA INDEX AND IT’S EXPONENTIAL OF NANOCONES AND DENDRIMERS .
Author(s) -
V. R. Kulli
Publication year - 2021
Publication title -
international journal of engineering, sciences and research technology
Language(s) - English
Resource type - Journals
ISSN - 2277-9655
DOI - 10.29121/ijesrt.v10.i5.2021.5
Subject(s) - dendrimer , exponential function , mathematics , graph , invariant (physics) , topological index , combinatorics , mathematical analysis , materials science , mathematical physics , polymer chemistry
Recently, a novel invariant is considered, which is the Nirmala index defined as the sum of the square root of sum of the degrees of the pairs of adjacent vertices. In this paper, we introduce some new Nirmala indices: the second, third, fourth and neighborhood (or fifth) Nirmala indices of a graph. Furthermore, we compute the neighborhood Nirmala index and its exponential for certain important chemical structures such as nanocones and dendrimers.