Results 11 to 20 of about 102,073 (256)

Unicyclic graphs with equal Laplacian energy [PDF]

open access: yesLinear and Multilinear Algebra, 2013
11 pages, 11 figures, slightly modified version of Theorem 1 when compared with original ...
Fritscher, Eliseu   +2 more
openaire   +4 more sources

On Relation Between Kirchhoff Index, Laplacian-Energy-Like Invariant and Laplacian Energy of Graphs [PDF]

open access: yesBulletin of the Malaysian Mathematical Sciences Society, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Das, Kinkar Ch., Xu, Kexiang
core   +6 more sources

Laplacian energy and first Zagreb index of Laplacian integral graphs

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2022
The set Si,n = {0, 1, 2, …, i − 1, i + 1, …, n − 1, n}, 1 ⩽ i ⩽ n, is called Laplacian realizable if there exists a simple connected undirected graph whose Laplacian spectrum is Si,n. The existence of such graphs was established by S. Fallat et all.
Hameed Abdul   +2 more
doaj   +2 more sources

Laplacian and signless laplacian spectra and energies of multi-step wheels

open access: yesMathematical Biosciences and Engineering, 2020
Energies and spectrum of graphs associated to different linear operators play a significant role in molecular chemistry, polymerisation, pharmacy, computer networking and communication systems.
Zheng-Qing Chu   +4 more
doaj   +4 more sources

New bounds for Laplacian energy / Новые ограничения Лапласовой энергии / Nova ograničenja za Laplasovu energiju [PDF]

open access: yesVojnotehnički Glasnik, 2020
Introduction/purpose: The Laplacian energy (LE) is the sum of absolute values of the terms μi-2m/n, where μi , i=1,2,…,n, are the eigenvalues of the Laplacian matrix of the graph G with n vertices and m edges. The basic results of the theory of LE are
Ivan Gutman
doaj   +2 more sources

L-Borderenergetic graphs and Normalized Laplacian Energy [PDF]

open access: green, 2016
In this paper we present new L-borderenergetic graphs, this is, graphs which are L-noncospectral with Kn but have the same Laplacian energy. We also present some graphs which are noncospectral to respective normalized Laplacian energy and they have the same normalized Laplacian energy.
Fernando Tura
openalex   +3 more sources

On Laplacian-energy-like invariant and incidence energy [PDF]

open access: yesInternational Journal of Group Theory, 2015
For a simple connected graph G with n -vertices having Laplacian eigenvalues‎ ‎μ 1 ‎, ‎μ 2 ‎, ‎… ‎, ‎μ n−1 ‎, ‎μ n =0 ‎, ‎and signless Laplacian eigenvalues q 1 ‎,‎q 2 ,…‎,‎q n ‎, ‎the Laplacian-energy-like invariant(LEL ) and the incidence energy ...
Shariefuddin Pirzada , Hilal A. Ganie
doaj   +2 more sources

A Note on the Laplacian Energy of the Power Graph of a Finite Cyclic Group

open access: diamondSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi
In this study, the Laplacian matrix concept for the power graph of a finite cyclic group is redefined by considering the block matrix structure. Then, with the help of the eigenvalues of the Laplacian matrix in question, the concept of Laplacian energy ...
Şerife Büyükköse   +1 more
doaj   +3 more sources

On net-Laplacian energy of signed graphs

open access: yesCommunications in Combinatorics and Optimization, 2017
A signed graph is a graph where the edges are assigned either positive or negative signs‎. ‎Net degree of a signed graph is the difference between the number of positive and negative edges incident with a vertex‎. ‎It is said to be net-regular if all its
Nutan G‎. ‎Nayak
doaj   +2 more sources

Laplacian Energy of Graphs

open access: yesپژوهش‌های ریاضی, 2020
hamideh Aram   +2 more
doaj   +2 more sources

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