Results 71 to 80 of about 4,554,566 (196)

Two modified Zagreb indices for random structures

Main Group Metal Chemistry, 2021
Random structure plays an important role in the composition of compounds, and topological index is an important index to measure indirectly the properties of compounds.
Li Siman, Shi Li, Gao Wei
doaj   +1 more source

Probabilistic analysis of the First Zagreb index

Transactions on Combinatorics, 2013
In this paper we study the Zagreb index in bucket recursive trees containing buckets with variable capacities. This model was introduced by Kazemi in 2012. Weobtain the mean and variance of the Zagreb index andintroduce a martingale based on this quantity.
openaire   +2 more sources

Reformulated Zagreb Index

, 2020
The edge version of traditional first Zagreb index is known as first reformulated Zagreb index. In this paper, we analyze and compare various lower and upper bounds for the first reformulated Zagreb index and we propose new lower and upper bounds which ...
T Mansour, E Suresh, G B A Xavier, M A Rostami   +3 more
core  

FDEM FAILURE ANALYSIS: BELL TOWER OF CHURCH OF ST. FRANCIS OF ASSISI ON KAPTOL IN ZAGREB

, 2021
This paper presents a failure analysis of the bell tower of The Church of St. Francis of Assisi on Kaptol in Zagreb on seismic action using the Finite-Discrete Element method - FDEM.
Munjiza, Antonio, Ivan Balić, Trogrlić, Boris, Smoljanović, Hrvoje, Boris Trogrlić, Hrvoje Smoljanović, Šodan, Matej, Antonio Munjiza, Matej Šodan, Foretić, Damir, Damir Foretić, Balić, Ivan   +11 more
core   +1 more source

On Some Properties of Fuzzy Topological Indices of Honeycomb Graph

Journal of Mathematics
The primary contribution of this paper is the characterization of a novel graph structure, the fuzzy honeycomb network, through the lens of fuzzy molecular descriptors.
Sana Shafqat, Naveed Yaqoob, Aliya Javed
doaj   +1 more source

Entropies and Degree-Based Topological Indices of Generalized Sierpiński Graphs

Fractal and Fractional
Fractals are geometric patterns that appear self-similar across all length scales and are constructed by repeating a single unit on a regular basis. Entropy, as a core thermodynamic function, is an extension based on information theory (such as Shannon ...
Si-Ao Xu, Jia-Dong Si, Jia-Bao Liu
doaj   +1 more source

Computing First Zagreb index and F-index of New C-products of Graphs

, 2017
For a (molecular) graph, the first Zagreb index is equal to the sum of squares of the degrees of vertices, and the F-index is equal to the sum of cubes of the degrees of vertices.
Shreekant Patil, Veena R. Desai, B. Basavanagoud, Keerthi G. Mirajkar, B Pooja, Wei Gao   +5 more
core   +1 more source

On Multiple Zagreb Indices 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. Recently, the first and second multiple Zagreb indices of a graph were introduced by Ghorbani and Azimi in 2012.
Imran, Muhammad, Malik, Mehar Ali
openaire   +5 more sources

Analysis of Zagreb indices over zero-divisor graphs of commutative rings [PDF]

, 2019
In this paper, first Zagreb index, second Zagreb index, first multiplicative Zagreb index, second multiplicative Zagreb index, first Zagreb coindices index, second Zagreb coindices index, first multiplicative Zagreb coindices index, second multiplicative
Aykac, Sumeyye, Akgunes, Nihat, Cevik, Ahmet Sinan   +2 more
core   +1 more source

Topology-Based Analysis of OTIS (Swapped) Networks OKn and OPn

Journal of Chemistry, 2019
In the fields of chemical graph theory, topological index is a type of a molecular descriptor that is calculated based on the graph of a chemical compound. In this paper, M-polynomial OKn and OPn networks are computed.
Hai-Xia Li, Sarfaraz Ahmad, Iftikhar Ahmad   +2 more
doaj   +1 more source