Results 11 to 20 of about 7,915 (234)

Zagreb Connection Number Index of Nanotubes and Regular Hexagonal Lattice

Open Chemistry, 2019
Topological indices are the fixed numbers associated with the graphs. In recent years, mathematicians used indices to check the pharmacology characteristics and molecular behavior of medicines.
Ye Ansheng, Qureshi Muhammad Imran, Fahad Asfand, Aslam Adnan, Jamil Muhammad Kamran, Zafar Asim, Irfan Rida   +6 more
doaj   +2 more sources

Extremal Chemical Trees of the First Reverse Zagreb Alpha Index [PDF]

Mathematics Letters, 2017
Süleyman Ediz
openalex   +3 more sources

Young children's perspectives of time: New directions for co‐constructing understandings of quality in ECEC

British Educational Research Journal, EarlyView., 2023
Abstract Children's relationship with time in preschools is an under‐researched area. Young children rarely know how to measure time using a clock, but their experiences of time may contribute to understanding children's well‐being and debates about quality in preschools.
Kristín Dýrfjörð, Anna Magnea Hreinsdóttir, Adrijana Visnjic‐Jevtic, Alison Clark   +3 more
wiley   +1 more source

First Entire Zagreb Index of Fuzzy Graph and Its Application

Axioms, 2023
The first entire Zagreb index (FEZI) is a graph parameter that has proven to be essential in various real-life scenarios, such as networking businesses and traffic management on roads.
Umapada Jana, Ganesh Ghorai
doaj   +1 more source

Some properties of the neighborhood first Zagreb index [PDF]

Discrete Mathematics Letters, 2019
Tamas Reti, Akbar Ali, Peter Varga, Eniko Bitay   +3 more
doaj   +1 more source

Some chemical indices related to the number of triangles [PDF]

Transactions on Combinatorics, 2023
Many chemical indices have been invented in theoretical chemistry, such as the Zagreb index, the Lanzhou index, the forgotten index, the Estrada index etc.
Mihrigul Wali
doaj   +1 more source

Certain topological indices and polynomials for the semitotal-point graph and line graph of semitotal-point graph for Dutch windmill graph

Indonesian Journal of Combinatorics, 2020
Dutch windmill graph [1, 2] and denoted by Dnm. Order and size of Dutch windmill graph are (n−1)m+1 and mn respectively. In this paper, we computed certain topological indices and polynomials i.e.
Salma Kanwal, Mariam Imtiaz, Ayesha Manzoor, Nazeeran Idrees, Ammara Afzal   +4 more
doaj   +1 more source

Topological Indices of H-Naphtalenic Nanosheet

Open Chemistry, 2018
In chemical graph theory, a single numeric number related to a chemical structure is called a topological descriptor or topological index of a graph.
Idrees Nazeran, Jawwad Saif Muhammad, Sadiq Afshan, Rauf Asia, Hussain Fida   +4 more
doaj   +1 more source

Topological Indices of the Pent-Heptagonal Nanosheets VC5C7 and HC5C7

Advances in Materials Science and Engineering, 2019
In this paper, we computed the topological indices of pent-heptagonal nanosheet. Formulas for atom-bond connectivity index, fourth atom-bond connectivity index, Randić connectivity index, sum-connectivity index, first Zagreb index, second Zagreb index ...
Fei Deng, Xiujun Zhang, Mehdi Alaeiyan, Abid Mehboob, Mohammad Reza Farahani   +4 more
doaj   +1 more source

On topological properties of block shift and hierarchical hypercube networks

Open Physics, 2018
Networks play an important role in electrical and electronic engineering. It depends on what area of electrical and electronic engineering, for example there is a lot more abstract mathematics in communication theory and signal processing and networking ...
Guirao Juan Luis García, Siddiqui Muhammad Kamran, Hussain Asif   +2 more
doaj   +1 more source