Results 71 to 80 of about 5,566,785 (118)

Some Results on the Signless Laplacian Spectra of Unicyclic Graphs [PDF]

, 2011
We determine the second to fourth largest (resp. the second smallest) signless Laplacian spectral radii and the second to fourth largest signless Laplacian spreads together with the corresponding graphs in the class of unicyclic graphs with n vertices ...
Muhuo Liu
core   +1 more source

Seidel Laplacian and Seidel Signless Laplacian energies of commuting graph for dihedral groups [PDF]

In this paper, we discuss the energy of the commuting graph. The vertex set of the graph is dihedral groups and the edges between two distinct vertices represent the commutativity of the group elements.
Syechah, Bulqis Nebula, Al-Quran, Ashraf, Nawawi, Athirah, Romdhini, Mamika Ujianita   +3 more
core   +1 more source

Ordering cacti with signless Laplacian spread

, 2018
A cactus is a connected graph in which any two cycles have at most one vertex in common. The signless Laplacian spread of a graph is defined as the difference between the largest eigenvalue and the smallest eigenvalue of the associated signless Laplacian
Lin, Zhen, Guo, Shu-Guang
core   +1 more source

Signless Laplacian determinations of some graphs with independent edges [PDF]

, 2018
Let $G$ be a simple undirected graph. Then the signless Laplacian matrix of $G$ is defined as $D_G + A_G$ in which $D_G$ and $A_G$ denote the degree matrix and the adjacency matrix of $G$, respectively.
Abdian, A.Z., Sharafdini, R., A.Z. Abdian, R. Sharafdini   +3 more
core   +1 more source

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

Signless Laplacian spectral characterization of some joins

, 2015
The join of two disjoint graphs G and H, denoted by G ∨ H, is the graph obtained by joining each vertex of G to each vertex of H. In this paper, the signless Laplacian characteristic polynomial of the join of two graphs is first formulated.
Liu, Xiaogang, Lu, Pengli
core   +1 more source

Eigenvalue bounds for the signless laplacian [PDF]

, 2007
We extend our previous survey of properties of spectra of signless Laplacians of graphs. Some new bounds for eigenvalues are given, and the main result concerns the graphs whose largest eigenvalue is maximal among the graphs with fixed numbers of ...
Peter Rowlinson, Rowlinson, Peter, Cvetkovic, Dragos, Dragos Cvetkovic, Slobodan Simic, Simic, Slobodan K   +5 more
core   +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

The signless Laplacian matrix of hypergraphs [PDF]

, 2022
In this article, we define signless Laplacian matrix of a hypergraph and obtain structural properties from its eigenvalues. We generalize several known results for graphs, relating the spectrum of this matrix to structural parameters of the hypergraph ...
Cardoso, Kauê da Rosa, Trevisan, Vilmar
core  

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