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Beyond the Zagreb indices [PDF]
AKCE International Journal of Graphs and Combinatorics, 2020 © 2018 Kalasalingam University. Published with license by Taylor & Francis Group, LLC. The two Zagreb indices (Formula presented.) and (Formula presented.) are vertex-degree-based graph invariants that have been introduced in the 1970s and extensively ...
Ivan Gutman +2 more
exaly +5 more sources
Computing Zagreb Indices and Zagreb Polynomials for Symmetrical Nanotubes [PDF]
Symmetry, 2018 Topological indices are numbers related to sub-atomic graphs to allow quantitative structure-movement/property/danger connections. These topological indices correspond to some specific physico-concoction properties such as breaking point, security ...
Zehui Shao +2 more
exaly +3 more sources
Graph-Theoretical Approach for Predicting Physicochemical Properties of Stiff-Person Syndrome Drugs. [PDF]
ChemistryOpenGraph‐theoretical descriptors derived from M‐polynomials are integrated with quantitative structure–property relationship modeling and machine learning to uncover structure–property relationships of drugs used in stiff‐person syndrome. Strong correlations between degree‐based topological indices and key physicochemical properties are revealed ...
Ali J, Ali Y, Malik MA, Shang Y.
europepmc +2 more sources
Extremal polyomino chains with respect to Zagreb indices
Applied Mathematics Letters, 2012 For a molecular graph, the first Zagreb index M1 is equal to the sum of squares of the vertex degrees and second Zagreb index M2 is equal to the sum of products of degree of pairs of adjacent vertices.
Zahra Yarahmadi +2 more
exaly +2 more sources
Modified Zagreb connection indices of the T-sum graphs
Main Group Metal Chemistry, 2020 The quantitative structures activity relationships (QSAR) and quantitative structures property relationships (QSPR) between the chemical compounds are studied with the help of topological indices (TI’s) which are the fixed real numbers directly linked ...
Usman Ali +2 more
exaly +2 more sources
Reformulated Zagreb Indices of Some Derived Graphs
Mathematics, 2019 A topological index is a numeric quantity that is closely related to the chemical constitution to establish the correlation of its chemical structure with chemical reactivity or physical properties.
Jia-Bao Liu +2 more
exaly +2 more sources
Smarandache-Zagreb Index on Three Graph Operators [PDF]
, 2010 Many researchers have studied several operators on a connected graph in which one make an attempt on subdivision of its edges. In this paper, we show how the Zagreb indices, a particular case of Smarandache-Zagreb index of a graph changes with these ...
Ranjini, P.S., Lokesha, V.
core +1 more source
Introducing New Exponential Zagreb Indices for Graphs [PDF]
, 2021 New graph invariants, named exponential Zagreb indices, are introduced for more than one type of Zagreb index. After that, in terms of exponential Zagreb indices, lists on equality results over special graphs are presented as well as some new bounds on ...
Aydin, Busra +3 more
core +1 more source
Bounds on Szeged and PI Indexes in terms of Second Zagreb Index [PDF]
, 2012 In this short note, we studied the vertex version and the edge version of the Szeged index and the PI index and obtained bounds for these indices in terms of the Second Zagreb index.
Ranjini P.S. +2 more
core +1 more source
EDGE-ZAGREB INDICES OF GRAPHS [PDF]
, 2020 The algebraic study of graph matrices is an important area of Graph Theory giving information about the chemical and physical properties of the corresponding molecular structure.
Cangul, I. N. +2 more
core +2 more sources