Results 51 to 60 of about 4,394,235 (151)

Computing First General Zagreb Index of Operations on Graphs

IEEE Access, 2019
The numerical coding of the molecular structures on the bases of topological indices plays an important role in the subject of Cheminformatics which is a combination of Computer, Chemistry, and Information Science. In 1972, it was shown that the total $\
Jia-bao Liu, S. Javed, M. Javaid, Khurram Shabbir   +3 more
semanticscholar   +1 more source

Hyper Zagreb Index of Bridge and Chain Graphs

Open Journal of Mathematical Sciences, 2018
Let G be a simple connected molecular graph with vertex set $V(G)$ and edge set $E(G)$. One important modification of classical Zagreb index, called hyper Zagreb index $HM(G)$ is defined as the sum of squares of the degree sum of the adjacent vertices, that is, sum of the terms $[{d_G}(u)+{d_G}(v)]^2$ over all the edges of $G$, where ${d_G}(u)$ denote ...
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On hyper-Zagreb index and coindex

, 2017
Bulletin t. 150 de l'Académie serbe des sciences et des arts. Classe des sciences mathématiques et naturelles. Sciences mathematiques no 42.
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Extremal hyper-Zagreb index of trees of given segments with applications to regression modeling in QSPR studies

Alexandria Engineering Journal, 2023
S. Hayat, M. Khan, Asad Khan, Haziq Jamil, M. Y. H. Malik   +4 more
semanticscholar   +1 more source

Reduced First Zagreb Index, Reduced Second Zagreb Index And Hyper-Zagreb Index Of Four New Sums Based On Tensor Product Of Graphs

, 2018
Topological indices have opened up doors for better studies in structural chemistry and biology. In this paper, we compute the Reduced first Zagreb index, Reduced second Zagreb index and hyper-Zagreb index of four new graph operations based on tensor product.
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On a Conjecture Concerning the Complementary Second Zagreb Index

Match Communications in Mathematical and in Computer Chemistry
The complementary second Zagreb index of a graph $G$ is defined as $cM_2(G)=\sum_{uv\in E(G)}|(d_u(G))^2-(d_v(G))^2|$, where $d_u(G)$ denotes the degree of a vertex $u$ in $G$ and $E(G)$ represents the edge set of $G$. Let $G^*$ be a graph having the maximum value of $cM_2$ among all connected graphs of order $n$. Furtula and Oz [MATCH Commun.
Saber, Hicham, Alraqad, Tariq, Ali, Akbar, Alanazi, Abdulaziz M., Raza, Zahid   +4 more
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On the extremal graphs for Second Zagreb Index with fixed number of vertices and cyclomatic number

Miskolc Mathematical Notes, 2022
Akbar Ali, K. Das, S. Akhter
semanticscholar   +1 more source

Zagreb indices of hyper carbon nanotube graphs. [PDF]

Discov Nano
Shabbir A, Nadeem MF, Bashir Y, Husin MN, Muda Y.   +4 more
europepmc   +1 more source

Sharp bounds for the first Zagreb index and first Zagreb coindex [PDF]

Miskolc Mathematical Notes, 2015
Milovanovic, Emina, Milovanovic, Igor
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Modelling π-electron energy of benzenes via Zagreb psi indices. [PDF]

J Comput Aided Mol Des
Yamaç K.
europepmc   +1 more source