Results 91 to 100 of about 82,097 (123)
Some of the next articles are maybe not open access.
A new geometric–arithmetic index
Journal of Mathematical Chemistry, 2009zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Fath-Tabar, Gholamhossein +2 more
openaire +3 more sources
On the geometric-arithmetic Estrada index of graphs
Applied Mathematics and Computation, 2021zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Liu, Chang, Pan, Yingui, Li, Jianping
openaire +4 more sources
On exponential geometric-arithmetic index of graphs
Journal of Mathematical Chemistry, 2023zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Das, Kinkar Chandra, Mondal, Sourav
openaire +2 more sources
COMPUTING SIXTH GEOMETRIC-ARITHMETIC INDEX OF NANOSTRUCTURES
Advances and Applications in Discrete Mathematics, 2019Summary: Topological indices are employed to figure out the physicochemical properties and bio-activity of chemical compounds in QSAR/QSPR. Quantitative Structure-Property Relationship (QSPR) and Quantitative Structure-Activity Relationship (QSAR) studies are indisputably have greater significance in biochemistry, modern chemistry as well as in drug ...
Mohanappriya, G., Vijayalakshmi, D.
openaire +2 more sources
Geometric-arithmetic index of Hamiltonian fullerenes
2012Summary: A graph that contains a Hamiltonian cycle is called a Hamiltonian graph. In this paper we compute the first and the second geometric-arithmetic indices of Hamiltonian graphs. Then we apply our results to obtain some bounds for fullerene.
MOSTAFAEI, H. +2 more
openaire +2 more sources
On two types of geometric–arithmetic index
Chemical Physics Letters, 2009Abstract Recently a class of so-called ‘geometric–arithmetic’ topological indices ( GA ) was put forward, defined as the sum over all edges ( uv ) of a (molecular) graph G , of terms Q u Q v / 1 2 ( Q u + Q v ) , where Q u is some quantity associated with the ...
Bo Zhou +3 more
openaire +1 more source
Comparison between first geometric–arithmetic index and atom-bond connectivity index
Chemical Physics Letters, 2010The first geometric-arithmetic index (GA) [1] and atom-bond connectivity index (ABC) [2] that are recently introduced, are found to be useful tools in QSPR and QSAR studies. In this letter we compare the GA and ABC indices for chemical trees and molecular graphs. Moreover, we also compare these two indices for general graphs. (C) 2010 Elsevier B.V. All
Das, Kinkar Ch., Trinajstić, Nenad
openaire +2 more sources
RELATIONS BETWEEN ARITHMETIC-GEOMETRIC INDEX AND GEOMETRIC-ARITHMETIC INDEX
Mathematical ReportsThe arithmetic-geometric index AG(G) and the geometric-arithmetic index GA(G) of a graph G are defined as AG(G) = P uv∈E(G) dG(u)+dG(v) 2 √ dG(u)dG(v) and GA(G) = P uv∈E(G) 2 √ dG(u)dG(v) dG(u)+dG(v) , where E(G) is the edge set of G, and dG(u) and dG(v) are the degrees of vertices u and v, respectively.
Das, Kinkar Chandra +2 more
openaire +2 more sources
Computing fifth geometric-arithmetic index for nanostar dendrimers
2011The geometric-arithmetic index is a topological index was defined as GA(G)=∑uv2(dudv)1/2/(du+dv), in which degree of vertex u denoted by dG(u ). Now we define a new version of GA index as GA5(G)=∑uv2(δuδv)1/2/(δu+δv) , where δu=∑uvdv. The goal of this paper is to further the study of the GA5 index.
Graovac, Ante +2 more
openaire +1 more source
On the total version of geometric-arithmetic index
2013The total version of geometric–arithmetic index of graphs is introduced based on the endvertex degrees of edges of their total graphs. In this paper, beside of computing the total GA index for some graphs, its some properties especially lower and upper bounds are obtained.
MAHMIANI, A., KHORMALI, O.
openaire +1 more source