Results 11 to 20 of about 5,965 (204)

The Laplacian spectrum of neural networks [PDF]

open access: yesFrontiers in Computational Neuroscience, 2014
The brain is a complex network of neural interactions, both at the microscopic and macroscopic level. Graph theory is well suited to examine the global network architecture of these neural networks.
Siemon ede Lange   +2 more
doaj   +6 more sources

Distance (signless) Laplacian spectrum of dumbbell graphs [PDF]

open access: yesTransactions on Combinatorics, 2023
In this paper, we determine the distance Laplacian and distance signless Laplacian spectrum of generalized wheel graphs and a new class of graphs called dumbbell graphs.
Sakthidevi Kaliyaperumal   +1 more
doaj   +2 more sources

Hyper-Wiener index and Laplacian spectrum [PDF]

open access: yesJournal of the Serbian Chemical Society, 2003
The hyper-Wiener index WWW of a chemical tree T is defined as the sum of the product n1 n2 n3, over all pairs u, u of vertices of T, where n1 and n2 are the number of vertices of T, lying on the two sides of the path which connects u and u, and n3 is the
IVAN GUTMAN
doaj   +4 more sources

On the Spectrum of Laplacian Matrix [PDF]

open access: yesMathematical Problems in Engineering, 2021
Let G be a simple graph of order n . The matrix ℒ
Akbar Jahanbani   +2 more
openaire   +2 more sources

Spektrum Laplace pada graf kincir angin berarah (Q_k^3)

open access: yesMajalah Ilmiah Matematika dan Statistika, 2022
Suppose that 0 = µ0 ≤ µ1 ≤ ... ≤ µn-1 are eigen values of a Laplacian matrix graph with n vertices and m(µ0), m(µ1), …, m(µn-1) are the multiplicity of each µ, so the Laplacian spectrum of a graph can be expressed as a matrix 2 × n whose line elements ...
Melly Amaliyanah   +2 more
doaj   +1 more source

Cospectral constructions for several graph matrices using cousin vertices

open access: yesSpecial Matrices, 2021
Graphs can be associated with a matrix according to some rule and we can find the spectrum of a graph with respect to that matrix. Two graphs are cospectral if they have the same spectrum.
Lorenzen Kate
doaj   +1 more source

On distance Laplacian spectrum of zero divisor graphs of the ring $\mathbb{Z}_{n}$

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2021
For a finite commutative ring $\mathbb{Z}_{n}$ with identity $1\neq 0$, the zero divisor graph $\Gamma(\mathbb{Z}_{n})$ is a simple connected graph having vertex set as the set of non-zero zero divisors, where two vertices $x$ and $y$ are adjacent if and
S. Pirzada, B.A. Rather, T.A. Chishti
doaj   +1 more source

Pollicott–Ruelle spectrum and Witten Laplacians

open access: yesJournal of the European Mathematical Society, 2021
We study the asymptotic behavior of eigenvalues and eigenmodes of the Witten Laplacian on a smooth compact Riemannian manifold without boundary. We show that they converge to the Pollicott–Ruelle spectral data of the corresponding gradient flow acting on appropriate anisotropic Sobolev spaces.
Dang, Nguyen Viet, Riviere, Gabriel
openaire   +4 more sources

Constraints on Brouwer's Laplacian spectrum conjecture [PDF]

open access: yesLinear Algebra and its Applications, 2021
18 pages, 0 ...
openaire   +2 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   +1 more source

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