Results 71 to 80 of about 775 (185)
On Sombor indices of generalized tensor product of graph families
Results in Control and OptimizationGraph invariants are extensively being used in different fields for analysing the structural properties of different compounds. Several topological indices, their properties and relations between different indices have been explored. Ivan Gutman recently
Nadar Jenita Mary Masilamani Raja +1 more
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Modeling the Physicochemical Characteristics of Benzene Compounds Utilizing Zagreb Eta Indices
Journal of Chemistry, Volume 2025, Issue 1, 2025.This study presents the Zagreb Eta indices, a novel family of degree‐based topological descriptors defined through multiplicative combinations of neighboring vertex degrees, designed to model the physicochemical properties of benzenoid hydrocarbons. Building on our prior work that proposed the additive Zagreb upsilon indices, we intentionally reused ...
İdris Çiftçi, Mahmood Ahmed
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Sombor Leap Indices of Some Chemical Drugs
RESEARCH REVIEW International Journal of Multidisciplinary, 2022 In Chemical Graph Theory, several degree-based topological indices were introduced and studied since 1972. In this paper, we introduce the Sombor leap index and modified Sombor leap index and compute these indices for some important nanostructures which appeared in nanoscience.
V. R. Kulli, N. Harish, B. Chaluvaraju
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The Extremal Unicyclic Graphs With Given Girth for Exponential VDB Topological Indices
Journal of Mathematics, Volume 2025, Issue 1, 2025.Topological indices are widely used molecular structure descriptors in chemistry and pharmaceutics, which help analyze and predict the physicochemical properties and biological activity of compounds. Focusing on the discriminative power, researchers introduced the general exponential VDB topological index, which is defined as follows: TefG=∑uv∈EGefdu ...
Zhenhua Su, Zikai Tang, Ammar Alsinai
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Gutman, Sombor, and Harmonic Indices of Unit Graphs in The Integer Ring Modulo with A Specific Order [PDF]
The ring of integers modulo is an algebraic structure that plays an important role in various fields, such as number theory, cryptography, and number system modeling. This structure also has a strong connection to graph representation, especially in the
Pradana, Satriawan +2 more
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Journal of Mathematics, Volume 2025, Issue 1, 2025.Topological indices are indispensable tools in cheminformatics, and they provide succinct representations of molecular structure for property estimation. In chemical graph theory, various topological indices were introduced depending on degree and neighborhood‐degree. Here, new open neighborhood‐edge‐degree‐based topological indices are introduced, and
Gayathri Anbarasan +3 more
wiley +1 more source
Higher Education Quarterly, Volume 78, Issue 3, Page 1048-1066, July 2024.Abstract The article focuses on adaptation and validation of the Academic Motivation Scale questionnaire (AMS‐28) in higher education in four Eastern European countries: Czechia, Slovakia, Serbia, and Poland. The research was conducted with a total of 1711 respondents.
Ilona Kočvarová +5 more
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Some basic properties of Sombor indices
Open Journal of Discrete Applied Mathematics, 2021 The recently introduced class of vertex-degree-based molecular structure descriptors, called Sombor indices (\(SO\)), are examined and a few of their basic properties established. Simple lower and upper bounds for \(SO\) are determined. It is shown that any vertex-degree-based descriptor can be viewed as a special case of a Sombor-type index.
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Cloud Computing Network Empowered by Modern Topological Invariants
Applied Sciences, 2023 The cloud computing networks used in the IoT, and other themes of network architectures, can be investigated and improved by cheminformatics, which is a combination of chemistry, computer science, and mathematics.
Khalid Hamid +5 more
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Extremal values of the modified Sombor index in trees [PDF]
Based on Euclidean metrics, Gutman put forward a novel vertex-degree-based topological index, named the Sombor index. Later, the modified version of it—the modified Sombor index—was introduced.
Kun Wang, Wenjie Ning, Yuheng Song
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