Results 61 to 70 of about 11,404 (180)

Some remarks on Laplacian eigenvalues and Laplacian energy of graphs [PDF]

open access: yes, 2010
Suppose $\mu_1$, $\mu_2$, ... , $\mu_n$ are Laplacian eigenvalues of a graph $G$. The Laplacian energy of $G$ is defined as $LE(G) = \sum_{i=1}^n|\mu_i - 2m/n|$. In this paper, some new bounds for the Laplacian eigenvalues and Laplacian energy of some
Ashrafi, Ali Reza   +3 more
core   +1 more source

SOME INEQUALITIES FOR THE GRAPH ENERGY OF DISTANCE LAPLACIAN MATRIX [PDF]

open access: yes, 2022
In this paper, the distance laplacian energy for distance matrix is examined. Some bounds for the laplacian eigenvalues of distance matrix are expanded including the distances, the vertices and the edges.
GÖK, GÜLİSTAN KAYA
core  

Data for "Laplacian-level meta-GGA for the weakly-nonlocal solid and liquid metals" [PDF]

open access: yes, 2022
This dataset contains all VASP inputs and outputs for the paper "Improved Laplacian-level meta-GGA for the weakly-nonlocal solid and liquid metals." For the preprint, see arXiv:2203.09403, and for the reference densities, fitting routines, and analysis ...
Kaplan, Aaron D., Perdew, John P.
core   +1 more source

Solutions for the Problems Involving Fractional Laplacian and Indefinite Potentials

open access: yesAdvanced Nonlinear Studies, 2017
In this paper, we consider a class of Schrödinger equations involving fractional Laplacian and indefinite potentials. By modifying the definition of the Nehari–Pankov manifold, we prove the existence and asymptotic behavior of least energy solutions.
Tang Zhongwei, Wang Lushun
doaj   +1 more source

Bounds for Laplacian-type graph energies [PDF]

open access: yesMiskolc Mathematical Notes, 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 ≥ ... ≥ ρn-1 > ρn = 0, respectively, the Laplacian, signless Laplacian, and normalized Laplacian eigenvalues of G.
Gutman, Ivan   +2 more
openaire   +3 more sources

Some improved bounds on two energy-like invariants of some derived graphs

open access: yesOpen Mathematics, 2019
Given a simple graph G, its Laplacian-energy-like invariant LEL(G) and incidence energy IE(G) are the sum of square root of its all Laplacian eigenvalues and signless Laplacian eigenvalues, respectively. This paper obtains some improved bounds on LEL and
Cui Shu-Yu, Tian Gui-Xian
doaj   +1 more source

Total π-electron energy and Laplacian energy: How far the analogy goes? [PDF]

open access: yesJournal of the Serbian Chemical Society, 2007
The Laplacian energy LE is a newly introduced molecular-graph-based analog of the total π-electron energy E. It is shown that LE and E have a similar structure-dependency only when molecules of different sizes are compared, when a good linear correlation
Radenković Slavko, Gutman Ivan
doaj   +1 more source

Certain Notions of Energy in Single-Valued Neutrosophic Graphs

open access: yesAxioms, 2018
A single-valued neutrosophic set is an instance of a neutrosophic set, which provides us an additional possibility to represent uncertainty, imprecise, incomplete and inconsistent information existing in real situations.
Sumera Naz   +2 more
doaj   +1 more source

Laplacian energies of vertices

open access: yesLinear Algebra and its Applications
In this work, we define the Laplacian and Normalized Laplacian energies of vertices in a graph, we derive some of its properties and relate them to combinatorial, spectral and geometric quantities of the graph.
openaire   +3 more sources

Laplacian and signless-laplacian energies of closed shadow graphs [PDF]

open access: yes, 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  

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