Results 161 to 170 of about 25,433 (194)
Some of the next articles are maybe not open access.
ZAGREB POLYNOMIALS AND MULTIPLE ZAGREB INDICES FOR COMB GRAPH
JP Journal of Algebra, Number Theory and Applications, 2018Summary: A topological index of graph \(G\) is a numerical parameter related to \(G\), which characterizes its topology and is preserved under isomorphism of graphs. Properties of the chemical compounds and topological indices are correlated. In this report, we compute closed forms of first Zagreb, second Zagreb, first multiple Zagreb index and second ...
Kang, Shin Min +3 more
openaire +1 more source
2020
Zagreb indices for undirected graphs were introduced nearly 50 years ago. Their original development was related to uses in chemistry, but over time mathematicians have also found them to be an interesting topic of study. We define and introduce Zagreb indices for directed graphs, give results that parallel many of the conjectures and theorems that ...
Barbara M. Anthony, Alison M. Marr
openaire +1 more source
Zagreb indices for undirected graphs were introduced nearly 50 years ago. Their original development was related to uses in chemistry, but over time mathematicians have also found them to be an interesting topic of study. We define and introduce Zagreb indices for directed graphs, give results that parallel many of the conjectures and theorems that ...
Barbara M. Anthony, Alison M. Marr
openaire +1 more source
Frontiers of Mathematics in China, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Das, Kinkar Ch., Xu, Kexiang, Nam, Junki
openaire +2 more sources
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Das, Kinkar Ch., Xu, Kexiang, Nam, Junki
openaire +2 more sources
On discriminativity of Zagreb indices
Iranian journal of mathemathical chemistry, 2012Zagreb indices belong to better known and better researched topological indices. We investigate here their ability to discriminate among benzenoid graphs and arrive at some quite unexpected conclusions. Along the way we establish tight (and sometimes sharp) lower and upper bounds on various classes of benzenoids.
openaire +2 more sources
THE ZAGREB INDICES OF RANDOM GRAPHS
Probability in the Engineering and Informational Sciences, 2013Several limit laws for the Zagreb indices of the classical Erdös–Rényi random graphs are investigated in this paper. We have obtained the necessary and sufficient condition for the asymptotic normality of the two Zagreb indices (suitably normalized), as well as the explicit values for the means and variances of both the indices.
Feng, Qunqiang, Hu, Zhishui, Su, Chun
openaire +2 more sources
2011
A review of developments, optimisations and applications of Zagreb Indices is given.
Lučić, Bono, Trinajstić, Nenad
openaire +1 more source
A review of developments, optimisations and applications of Zagreb Indices is given.
Lučić, Bono, Trinajstić, Nenad
openaire +1 more source
Overall Molecular Descriptors. 3. Overall Zagreb Indices
SAR and QSAR in Environmental Research, 2001This paper develops further the concept of overall characterization of molecular topology, which is based on calculation of a given graph-invariant for all subgraphs of molecular graph. The new approach defines a cumulative topological descriptor, and an ordered series of terms (eth-order descriptor), which present the sum of the graph-invariant values
Bonchev, Danail, Trinajstić, Nenad
openaire +3 more sources
ZAGREB INDICES, HYPER ZAGREB INDICES AND REDEFINED ZAGREB INDICES OF CONICAL GRAPHS
Advances in Mathematics: Scientific Journal, 2020A. Alameri, M. Shubatah, M. Alsharafi
openaire +1 more source