Results 81 to 90 of about 222 (137)

Some new bounds for the signless Laplacian energy of a graph

, 2020
For a simple graph $G$ with $n$ vertices, $m$ edges and signless Laplacian eigenvalues $q_{1} \geq q_{2} \geq \cdots \geq q_{n} \geq 0$, its the signless Laplacian energy $QE(G)$ is defined as $QE(G) = \sum_{i=1}^{n}|q_{i} - \bar{d} |$, where $\bar{d} = \frac{2m}{n}$ is the average vertex degree of $G$.
Wang, Peng, Huang, Qiongxiang
openaire   +2 more sources

ENERGY OF NON-COPRIME GRAPH ON MODULO GROUP

Barekeng
A graph is a mathematical structure consisting of a non-empty set of vertices and a set of edges connecting these vertices. In recent years, extensive research on graphs has been conducted, with one of the intriguing topics being the representation of ...
Gusti Yogananda Karang, I Gede Adhitya Wisnu Wardhana, Manimaran Angamuthu   +2 more
doaj   +1 more source

Bounds for laplacian-type graph energies

, 2015
© 2015 Miskolc University Press. Let G be an undirected simple and connected graph with n vertices (n ≥ 3) and m edges. Denote by μ1 ≥ μ2 ≥ ... ≥ μn-1 > μn = 0, γ1 ≥ γ2 ≥ ... ≥ γn, and ρ1 ≥ ρ2 ≥ ...
Milovanovíc E., Milovanović I., Gutman, Ivan   +2 more
core   +1 more source

Minimum covering reciprocal distance signless Laplacian energy of graphs

Acta Universitatis Sapientiae, Informatica, 2018
Abstract Let G be a simple connected graph. The reciprocal transmission Tr′G(ν) of a vertex ν is defined as
Alhevaz Abdollah, Baghipur Maryam, Hashemi Ebrahim, Alizadeh Yaser   +3 more
openaire   +2 more sources

Exploring spectrum-based descriptors in pharmacological traits through quantitative structure property (QSPR) analysis

Frontiers in Physics
The study centered on Quantitative Structure Property Relationship (QSPR) analysis with a focus on various graph energies, investigating drugs like Mefloquinone, Sertraline, Niclosamide, Tizoxanide, PHA-690509, Ribavirin, Emricasan, and Sofosbuvir ...
Ali Raza, Muhammad Mobeen Munir
doaj   +1 more source

Laplacian and signless-laplacian energies of closed shadow graphs

, 2022
In 2005, I. Gutman and B. Zhou introduced the notion of Laplacian energy, which is defined as the sum of the differences between the Laplacian eigenvalues of the graph and the average degree of vertices in the graph.
Sung, Inseok
core  

Relation between signless Laplacian energy, energy of graph and its line graph

Linear Algebra and its Applications, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Das, Kinkar Ch., Mojallal, Seyed Ahmad
openaire   +1 more source

Similarity Measures and Energy-Based Decision-Making in Intuitionistic Fuzzy Rough Graphs

International Journal of Computational Intelligence Systems
A novel intuitionistic fuzzy rough similarity measure for classifying intuitionistic fuzzy rough graphs (IFRG) is presented in this study. Using both objective and subjective, it presents intuitionistic fuzzy rough preference relationships (IFRPRs) to ...
Noorjahan Shaik, Sharief Basha Shaik
doaj   +1 more source

Common neighborhood (signless) Laplacian spectrum and energy of CCC-graph

Boletim da Sociedade Paranaense de Matemática
In this paper, we consider commuting conjugacy class graph (abbreviated as CCC-graph) of a finite group $G$ which is a graph with vertex set $\{x^G : x \in G \setminus Z(G)\}$ (where $x^G$ denotes the conjugacy class containing $x$) and two distinct vertices $x^G$ and $y^G$ are joined by an edge if there exist some elements $x'\in x^G$ and $y'\in y^G ...
Jannat, Firdous Ee, Nath, Rajat Kanti
openaire   +2 more sources

Quantitative structure-properties relationship analysis of Eigen-value-based indices using COVID-19 drugs structure. [PDF]

Int J Quantum Chem, 2023
Rauf A, Naeem M, Hanif A.
europepmc   +1 more source