Results 21 to 30 of about 1,062,219 (211)

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., Öz, Mert Sinan, Yamac, C.   +2 more
core   +2 more sources

New bounds on Zagreb indices and the Zagreb Co-indices

Boletim da Sociedade Paranaense de Matemática, 2011
In this short note, we studied the first, second Zagreb indices and the Zagreb Co-indices. Also, established the connections of bounds to the above sighted indices.
P. S. Ranjini, V. Lokesha, A. R. Bindusree, M. Phani Raju   +3 more
openaire   +5 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

On the Zagreb indices equality

Discrete Applied Mathematics, 2012
11 pages, 1 ...
Hosam Abdo, Darko Dimitrov, Ivan Gutman
openaire   +5 more sources

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., Phani Raju, M., Lokesha, V.   +2 more
core   +1 more source

On multiple Zagreb index of TiO2 nanotubes

Acta Chimica Slovenica, 2015
The First and Second Zagreb indices were first introduced by I. Gutman and N. Trinajstic in 1972. It is reported that these indices are useful in the study of anti-inflammatory activities of certain chemical instances, and in elsewhere.
Mehar Ali Malik, Muhammad Imran
doaj   +1 more source

Computing Topological Indices and Polynomials for Line Graphs

Mathematics, 2018
A topological index is a number related to the atomic index that allows quantitative structure–action/property/toxicity connections. All the more vital topological indices correspond to certain physico-concoction properties like breaking point ...
Shahid Imran, Muhammad Kamran Siddiqui, Muhammad Imran, Muhammad Faisal Nadeem   +3 more
doaj   +1 more source

Study of Neighborhood Degree-Based Topological Indices via Direct and NM-Polynomial of Starphene Graph

Journal of Function Spaces, 2022
Our objective is to compute the neighborhood degree-based topological indices via NM-polynomial for starphene. In the neighborhood degree-based topological indices, we compute the third version of the Zagreb index; neighborhood second Zagreb index ...
Deeba Afzal, Saira Hameed, Usman Ashraf, Arif Mehmood, Faryal Chaudhry, Dhan Kumari Thapa   +5 more
doaj   +1 more source

Machine Learning and Structural Analysis for Generation-Wise Selection of Perylene Diimide Dendrimers Based on Topological Compatibility With Drug Molecules. [PDF]

ChemistryOpen
Machine learning and graph‐theoretic descriptors are integrated to evaluate topology‐based compatibility between perylene diimide‐core dendrimer generations and antiviral, antioxidant, and imaging agents. Standardized structural similarity reveals generation‐dependent compatibility patterns, while Gaussian process regression uncovers key structure ...
Bibi Z, Ali J, Irshad S, Ghafar MS, Ali Y, Shang Y.   +5 more
europepmc   +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 ...
Ali Usman, Javaid Muhammad, Kashif Agha
doaj   +1 more source