Results 31 to 40 of about 6,836 (165)
Topological Indices of Certain Transformed Chemical Structures
Journal of Chemistry, 2020 Topological indices like generalized Randić index, augmented Zagreb index, geometric arithmetic index, harmonic index, product connectivity index, general sum-connectivity index, and atom-bond connectivity index are employed to calculate the bioactivity ...
Xuewu Zuo +4 more
doaj +1 more source
Degree-based topological indices of boron nanotubes
AIP Advances, 2023 In the past two decades, boron nanotubes have received significant attention from researchers and scientists due to their wide-ranging applications in electronics, nanodevices, optical engineering, nanobiotechnology, and cosmetics.
Sohan Lal, Shriya Negi, Vijay Kumar Bhat
doaj +1 more source
Random recursive trees: A boundary theory approach [PDF]
, 2014 We show that an algorithmic construction of sequences of recursive trees leads to a direct proof of the convergence of random recursive trees in an associated Doob-Martin compactification; it also gives a representation of the limit in terms of the input
Grübel, Rudolf, Michailow, Igor
core +3 more sources
On Reverse Valency Based Topological Characterization of a Chemical Compound
Journal of Mathematics, 2022 Metal-organic frameworks explicit the consequence of these frameworks with adjustable implementations, namely, energy storage gadgets of magnificent electrode materials, gas store, heterogeneous catalysis, environmental hazard, estimation of chemicals ...
Maria Singaraj Rosary, Samuel Asefa Fufa
doaj +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 +2 more
doaj +1 more source
Augmented Zagreb Index of Polyhex Nanotubes
, 2016 Augmented Zagreb Index is a newly defined degree based topological invariant which has been well established for its better correlation properties and is defined as $AZI(G)= \sum_{uv\in E(G)}(\frac{d_G (u)d_G (v)}{d_G (u)+ d_G (v)-2})^3 $, where $E(G)$ is the edge set of graph $G$ and $d(u),\,\,d(v)$ are the degrees of the end vertices $u$ and $v$ of ...
Idrees, Nazeran +3 more
openaire +2 more sources
Regional Development in Croatia from the turn of Millennium to the EU accession [PDF]
, 2014 Researching territorial development in the independent Croatia is an interesting subject for research from many aspects. Unique developments – state formation, war, spatial restructuring of population – have been taking place up until the turn of the ...
Rácz, Szilárd
core +2 more sources
Entropies and Degree-Based Topological Indices of Generalized Sierpiński Graphs
Fractal and FractionalFractals 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
On Topological Indices of mth Chain Hex-Derived Network of Third Type
Frontiers in Physics, 2020 In theoretical chemistry, the numerical parameters that are used to characterize the molecular topology of graphs are called topological indices. Several physical and chemical properties like boiling point, entropy, heat formation, and vaporization ...
Yuhong Huo +5 more
doaj +1 more source
The maximum augmented Zagreb index for interval graphs with edge-connectivity one
, 2023 Abstract The augmented Zagreb index (AZI) of graph is defined as the sum of weights of all edges uv of a graph G, where the weight of edge uv is calculated as (d(u)d(v) / d(u)+d(v)−2)3. In this paper, we examine the (maximum) AZI for graphs with edge connectivity one and examine the relative extremal graphs. MSC: 5C35.
Mehar Ali Malik +3 more
openaire +1 more source