Results 71 to 80 of about 1,315,432 (182)

On the Fucik spectrum of the p-Laplacian

open access: yes, 2015
We prove the existence of a first non-trivial curve in the Fucik spectrum of the p-Laplacian. This yields in particular a variational characterization of the second eigenvalue of the p-Laplacian by a mountain pass procedure.
Gossez, JP, Cuesta, M, De Figueiredo, DG
core   +1 more source

LAPLACIAN SPECTRUM, EFFECTIVE RESISTANCE AND ROBUSTNESS IN ELECTRICAL NETWORK OF FULLERENE C 60

open access: yes, 2020
In this work, the Laplacian spectrum of some well-known graphs such as fullerene C 60 and hyper cubes is computed.
Ehsan Limouchi Deli
core  

On the Laplacian and signless Laplacian spectrum of a graph with k pairwise co-neighbor vertices

open access: yes
Consider the Laplacian and signless Laplacian spectrum of a graph G of order n, with k pairwise co-neighbor vertices. We prove that the number of shared neighbors is a Laplacian and a signless Laplacian eigenvalue of G with multiplicity at least k− 1.
Martins, Enide A.   +4 more
core   +1 more source

On a Class of Laplacian Integral Graphs

open access: yes, 2014
A graph whose adjacency (Laplacian) matrix has a spectrum consisting only of integers is called (Laplacian) integral. We observe that a certain class of digraphs is integral as well as Laplacian integral.
Rüttimann, Linus   +3 more
core   +1 more source

Selector for the Spectrum Award 2018

open access: yes, 2018
Billingham was invited to be part of the selection panel for the first Spectrum Award in 2018 alongside Mark Wallinger, Charming Baker, Professor Simon Baron-Cohen, Sacha Craddock and Mary Simpson.
Billingham, Richard, Spectrum
core   +2 more sources

Discrete analogue of Fučik spectrum of the Laplacian

open access: yesJournal of Computational and Applied Mathematics, 1999
The Fučík spectrum of the Laplacian with a Dirichlet boundary condition \((-\Delta u=\alpha u^+-\beta u^-)\) and the discrete analog of the Fučík spectrum for the matrix \(A\) \((M\)-matrices) are considered. This analog has properties similar to those of the continuum.
openaire   +3 more sources

Adjacency spectra and Laplacian integrality of zero divisor graphs over some rings

open access: yesKuwait Journal of Science
Let 𝑅 be a commutative ring and let 𝑍∗ (𝑅) denote the set of non-zero zero divisors of 𝑅. The zero divisor graph 𝛤(𝑅) is defined as the simple graph with vertex set 𝑍∗ (𝑅), where two distinct vertices 𝑥, 𝑦 ∈ 𝑍∗ (𝑅) are adjacent if and only if 𝑥𝑦 = 0.
Bilal Ahmad Rather   +3 more
doaj   +1 more source

Resonance Problems with Respect to the Fucik Spectrum of the p-Laplacian [PDF]

open access: yes, 2002
We solve resonance problems with respect to the Fucik spectrum of the p-Laplacian using variational methods ...
Perera, Kanishka
core   +2 more sources

LAPLACIAN SPECTRUM AND ENERGY OF NON-COMMUTING GRAPHS OF FINITE RINGS [PDF]

open access: yesJournal of Algebraic Systems
We compute spectrum, energy, Laplacian spectrum/ energy and signless Laplacian spectrum/energy of non-commuting graphs of certain finite non-commutative rings. In particular, we consider finite rings $R$ such that $|R| = p^2, p^3, p^4$, $p^5$, $p^2q$ and
Monalisha Sharma, Rajat Nath
doaj   +1 more source

Outer Approximation of the Spectrum of a Fractal Laplacian

open access: yes, 2007
The Neumann spectrum of a Laplacian on a fractal K in the plane is approximated as a renormalized limit of the Neumann spectra of the standard Laplacian on a sequence of domains which approximate K from the outside.
Goff, Stacey
core  

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