Results 211 to 220 of about 140,001 (255)
AKCE International Journal of Graphs and Combinatorics, 2017 © 2017 Kalasalingam University The general sum-connectivity index, general product-connectivity index, general Zagreb index and coindices of line graphs of subdivision graphs of tadpole graphs, wheels and ladders have been reported in the literature.
Harishchandra S Ramane +2 more
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The connectivity and the Harary index of a graph
Discrete Applied Mathematics, 2015 The Harary index of a graph is defined as the sum of reciprocals of distances between all pairs of vertices of the graph. In this paper we provide an upper bound of the Harary index in terms of the vertex or edge connectivity of a graph. We characterize the unique graph with maximum Harary index among all graphs with given number of cut vertices or ...
Yi-Zheng Fan
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On the eccentric connectivity index of a graph
Discrete Mathematics, 2011 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
S Mukwembi
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The sum-connectivity index--an additive variant of the Randic connectivity index.
Current computer-aided drug design, 2013This review discusses structure-property modeling applications of a novel variant of the Randic connectivity index that is called the sum-connectivity index. We compare published one-descriptor quantitative structure-property relationship (QSPR) models obtained with the new sum-connectivity index and with the Randic connectivity index, called here the ...
Lučić, Bono +8 more
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On Connected Graphs Having the Maximum Connective Eccentricity Index
Journal of Applied Mathematics and Computing, 2021The connective eccentricity index (CEI) of a connected graph G is defined as $$\xi ^{ee}(G)=\sum _{u\in V_G}[d_G(u)/\varepsilon _G(u)]$$ , where $$d_G(u)$$ and
Shahid Zaman, Akbar Ali
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A Connectivity Index for Discrete Fracture Networks
Mathematical Geosciences, 2006 Connectivity is an important measure for assessing flow transport in rock, especially through fractures. In this paper, rock fracture systems are modelled by a discrete fracture model simulated by a marked point process.
Chaoshui Xu, Peter A Dowd, K V Mardia
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On Eccentric Connectivity Index and Connectivity
Acta Mathematica Sinica, English Series, 2019zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Mukungunugwa, Vivian, Mukwembi, Simon
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Atom–bond connectivity index of trees
Discrete Applied Mathematics, 2009 The recently introduced atom-bond connectivity (ABC) index has been applied up to now to study the stability of alkanes and the strain energy of cycloalkanes. Here, mathematical properties of the ABC index of trees are studied. Chemical trees with the extremal ABC values are found. In addition, it has been proven that among all trees, the star tree, Sn,
Boris Furtula +2 more
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Master Connectivity Index and Master Connectivity Polynomial
Current Computer Aided-Drug Design, 2010We give the standard expressions of the Zagreb indices, Randić indices and their variants. Then we present the master connectivity index and show how this index can generate all connectivity indices of both varieties. We also present the master connectivity polynomial and show the relationship between this polynomial and the master connectivity index ...
Vukičević, Damir +4 more
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The Vertex-Connectivity Index Revisited
Journal of Chemical Information and Computer Sciences, 1998We report a search for optimum molecular descriptors based on the connectivity index. A suggestion made by several authors that the exponent -0.5 used in the standard formula for computing the connectivity index may not be the optimum for modeling some molecular properties was reexamined.
Dragan Amic +5 more
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