Results 11 to 20 of about 150,131 (321)
On the topological matrix and topological indices [PDF]
AKCE International Journal of Graphs and Combinatorics, 2020 The topological matrix of a graph are indexed by . If then the of is 1 and the of is 0 for otherwise. In this paper, an upper bound for this topological matrix is found and the weighted topological matrix is defined.
Gülistan Kaya Gök
doaj +2 more sources
Machine‐Learning Spectral Indicators of Topology [PDF]
Advanced Materials, 2022 AbstractTopological materials discovery has emerged as an important frontier in condensed matter physics. While theoretical classification frameworks have been used to identify thousands of candidate topological materials, experimental determination of materials’ topology often poses significant technical challenges. X‐ray absorption spectroscopy (XAS)
Nina Andrejevic +9 more
openaire +5 more sources
M-Polynomial and Related Topological Indices of Nanostar Dendrimers [PDF]
Symmetry, 2016 Mobeen Munir +3 more
openalex +3 more sources
On topological descriptors of ceria oxide and their applications
Main Group Metal Chemistry, 2021 A topological descriptor is a mathematical illustration of a molecular construction that relates particular physicochemical properties of primary molecular structure as well its mathematical depiction.
Siddiqui Muhammad Kamran +4 more
doaj +1 more source
Topological Indices of Proteins [PDF]
Scientific Reports, 2019 AbstractProtein molecules can be approximated by discrete polygonal chains of amino acids. Standard topological tools can be applied to the smoothening of the polygons to introduce a topological classification of folded states of proteins, for example, using the self-linking number of the corresponding framed curves.
Melnikov, Dmitry +2 more
openaire +3 more sources
Topological Descriptors and Polynomials for Analysing the Structure of Antimony Telluride
Journal of Mathematics, 2022 In a molecular network, molecules are correlated with numerical values, which are referred to as topological indices. The chemical and physical properties of chemical substances can be determined using topological indices.
Shahid Imran +4 more
doaj +1 more source
Computation of Revan Topological Indices for Phenol-Formaldehyde Resin
Journal of Mathematics, 2022 Phenol-formaldehyde resin has a wide range of moldings. The phenolic resin retains properties at the freezing point; hence, it is difficult to determine its age.
Muhammad Kamran +5 more
doaj +1 more source
New Bounds for Some Topological Indices
International Journal of Foundations of Computer Science, 2022 The biological, chemical, and structural properties of molecular graphs can be predicted by using topological indices. The lower and upper bounds of fundamental topological indices are well-studied. In this paper, by using comparison theorem for integrals, we obtain new bounds for some topological indices namely, Randić index, Sombor index, harmonic ...
Kirgiz, Havva, Maden, A. Dilek
openaire +2 more sources
M-Polynomials and Degree-Based Topological Indices of the Molecule Copper(I) Oxide
Journal of Chemistry, 2021 Topological indices are numerical parameters used to study the physical and chemical residences of compounds. Degree-based topological indices have been studied extensively and can be correlated with many properties of the understudy compounds.
Faryal Chaudhry +5 more
doaj +1 more source