Results 31 to 40 of about 5,965 (204)

Spectrum of the A_p-Laplacian Operator

open access: yesBoletim da Sociedade Paranaense de Matemática, 2009
يتناول هذا العمل مشكلة القيمة الذاتية للحدود غير الخطية:\begin{equation *}( V.P_{ A,\rho,I})\ left \{\begin{aligned }& A_p u =\ lambda \rho(x )|u|^{ p -2}u in I =]a; b [;\\& u(a )= u(b )= 0;\end{aligned}\ right.\end{equation*}حيث يُطلق على A_p - Laplacian operator ويتم تعريفه بواسطة A_pu =(\Gamma(x )|u '|^{ p -2}u ')', p > 1, \gamma is a real parameter,
Aomar Anane   +2 more
openaire   +4 more sources

Spectra of the extended neighborhood corona and extended corona of two graphs

open access: yesElectronic Journal of Graph Theory and Applications, 2016
In this paper we define extended corona and extended neighborhoodcorona of two graphs $G_{1}$ and $G_{2}$, which are denoted by$G_{1}\bullet G_{2}$ and $G_{1}\ast G_{2}$ respectively.
Chandrashekar Adiga   +2 more
doaj   +1 more source

The signless Laplacian matrix of hypergraphs

open access: yesSpecial Matrices, 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, Trevisan Vilmar
doaj   +1 more source

Considering spatiotemporal evolutionary information in dynamic multi‐objective optimisation

open access: yesCAAI Transactions on Intelligence Technology, EarlyView., 2023
Abstract Preserving population diversity and providing knowledge, which are two core tasks in the dynamic multi‐objective optimisation (DMO), are challenging since the sampling space is time‐ and space‐varying. Therefore, the spatiotemporal property of evolutionary information needs to be considered in the DMO.
Qinqin Fan   +3 more
wiley   +1 more source

Magnetic Dirichlet Laplacian in curved waveguides [PDF]

open access: yesOpuscula Mathematica
For a two-dimensional curved waveguide, it is well known that the spectrum of the Dirichlet Laplacian is unstable with respect to waveguide deformations. This means that if the waveguide is a straight strip then the spectrum of the Dirichlet Laplacian is
Diana Barseghyan   +3 more
doaj   +1 more source

Tarantula graphs are determined by their Laplacian spectrum

open access: yesElectronic Journal of Graph Theory and Applications, 2021
A graph G is said to be determined by its Laplacian spectrum (DLS) if every graph with the same Laplacian spectrum is isomorphic to G. A graph which is a collection of hexagons (lengths of these cycles can be different) all sharing precisely one vertex ...
Reza Sharafdini, Ali Zeydi Abdian
doaj   +1 more source

Monophonic Distance Laplacian Energy of Transformation Graphs Sn^++-,Sn^{+-+},Sn^{+++}

open access: yesRatio Mathematica, 2023
Let $G$ be a simple connected graph of order $n$, $v_{i}$ its vertex. Let $\delta^{L}_{1}, \delta^{L}_{2}, \ldots, \delta^{L}_{n}$ be the eigenvalues of the distance Laplacian matrix $D^{L}$ of $G$. The distance Laplacian energy is denoted by $LE_{D}(G)$.
Diana R, Binu Selin T
doaj   +1 more source

Laplacian Spectrum of Weakly Quasi-threshold Graphs [PDF]

open access: yesGraphs and Combinatorics, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bapat, R. B., Lal, A. K., Pati, Sukanta
openaire   +2 more sources

On the construction of L-equienergetic graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2015
For a graph G with n vertices and m edges, and having Laplacian spectrum μ1,μ2,…,μn and signless Laplacian spectrum μ1+,μ2+,…,μn+, the Laplacian energy and signless Laplacian energy of G are respectively, defined as LE(G)=∑i=1n|μi−2mn| and LE+(G)=∑i=1n ...
S. Pirzada, Hilal A. Ganie
doaj   +1 more source

On the Spectra of Commuting and Non Commuting Graph on Dihedral Group

open access: yesCauchy: Jurnal Matematika Murni dan Aplikasi, 2017
Study about spectra of graph has became interesting work as well as study about commuting and non commuting graph of a group or a ring. But the study about spectra of commuting and non commuting graph of dihedral group has not been done yet.
Abdussakir Abdussakir   +2 more
doaj   +1 more source

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