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Asymptotic behavior of Laplacian-energy-like invariant of the 3.6.24 lattice with various boundary conditions. [PDF]

open access: yesSpringerplus, 2016
Let G be a connected graph of order n with Laplacian eigenvalues [Formula: see text]. The Laplacian-energy-like invariant of G, is defined as [Formula: see text]. In this paper, we investigate the asymptotic behavior of the 3.6.24 lattice in terms of Laplacian-energy-like invariant as m, n approach infinity.
Liu JB, Cao J, Hayat T, Alsaadi FE.
europepmc   +6 more sources

On two energy-like invariants of line graphs and related graph operations [PDF]

open access: yesJournal of Inequalities and Applications, 2016
For a simple graph G of order n, let μ 1 ≥ μ 2 ≥ ⋯ ≥ μ n = 0 $\mu_{1}\geq\mu_{2}\geq\cdots\geq\mu_{n}=0$ be its Laplacian eigenvalues, and let q 1 ≥ q 2 ≥ ⋯ ≥ q n ≥ 0 $q_{1}\geq q_{2}\geq\cdots\geq q_{n}\geq0$ be its signless Laplacian eigenvalues.
Xiaodan Chen, Yaoping Hou, Jingjian Li
doaj   +14 more sources

Some observations on the Laplacian-energy-like invariant of trees [PDF]

open access: yesDiscrete Mathematics Letters, 2022
Summary: Let \(G\) be a graph of order \(n\). Denote by \(A\) the adjacency matrix of \(G\) and by \(D=\mathrm{diag}(d_1, \dots, d_n)\) the diagonal matrix of vertex degrees of \(G\). The Laplacian matrix of \(G\) is defined as \(L=D - A\). Let \(\mu_1, \mu_2,\cdots, \mu_{n-1}, \mu_n\) be eigenvalues of \(L\) satisfying \(\mu_1\geq \mu_2\geq \dots \geq
Marjan Matejić   +3 more
doaj   +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

On Relation between the Kirchhoff Index and Laplacian-Energy-Like Invariant of Graphs [PDF]

open access: yesMathematics Interdisciplinary Research, 2017
Let G be a simple connected graph with n ≤ 2 vertices and m edges, and let μ1 ≥ μ2 ≥...≥μn-1 >μn=0 be its Laplacian eigenvalues. The Kirchhoff index and Laplacian-energy-like invariant (LEL) of graph G are defined as Kf(G)=nΣi=1n-11/μi and LEL(G)=Σi=1n-1 
Emina Milovanovic   +2 more
doaj   +2 more sources

On the Laplacian-energy-like invariant

open access: yesLinear Algebra and its Applications, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Das, Kinkar Ch.   +2 more
openaire   +4 more sources

On Laplacian resolvent energy of graphs [PDF]

open access: yesTransactions on Combinatorics, 2023
Let $G$ be a simple connected graph of order $n$ and size $m$. The matrix $L(G)=D(G)-A(G)$ is the Laplacian matrix of $G$, where $D(G)$ and $A(G)$ are the degree diagonal matrix and the adjacency matrix, respectively. For the graph $G$, let $d_{1}\geq d_{
Sandeep Bhatnagar   +2 more
doaj   +1 more source

(Generalized) Incidence and Laplacian-Like Energies

open access: yesJournal of Mathematics, 2023
In this study, for graph Γ with r connected components (also for connected nonbipartite and connected bipartite graphs) and a real number ε≠0,1, we found generalized and improved bounds for the sum of ε-th powers of Laplacian and signless Laplacian ...
A. Dilek Maden, Mohammad Tariq Rahim
doaj   +1 more source

The Laplacian-Energy-Like Invariants of Three Types of Lattices [PDF]

open access: yesJournal of Analytical Methods in Chemistry, 2016
This paper mainly studies the Laplacian-energy-like invariants of the modified hexagonal lattice, modified Union Jack lattice, and honeycomb lattice. By utilizing the tensor product of matrices and the diagonalization of block circulant matrices, we derive closed-form formulas expressing the Laplacian-energy-like invariants of these lattices.
Zheng-Qing Chu, Jia-Bao Liu, Xiao-Xin Li
openaire   +3 more sources

NORMALIZED LAPLACIAN ENERGY AND NORMALIZED LAPLACIAN-ENERGY-LIKE INVARIANT OF SOME DERIVED GRAPHS

open access: yesMatematički Vesnik, 2022
Summary: For a connected graph \(G\), the smallest normalized Laplacian eigenvalue is 0 while all others are positive and the largest cannot exceed the value 2. The sum of absolute deviations of the eigenvalues from 1 is called the normalized Laplacian energy, denoted by \(\mathbb{LE}(G)\).
Amin, Ruhul, Abu Nayeem, Sk. Md.
openaire   +2 more sources

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