Results 101 to 110 of about 73,165 (262)

Estimate Laplacian Spectral Properties of Large-Scale Networks by Random Walks and Graph Transformation

Mathematics
For network graphs, numerous graph features are intimately linked to eigenvalues of the Laplacian matrix, such as connectivity and diameter. Thus, it is very important to solve eigenvalues of the Laplacian matrix for graphs.
Changlei Zhan, Xiangyu Li, Jie Chen
doaj   +1 more source

Laplacian‎ ‎Coefficients of a‎ ‎Forest in Terms of the Number of Closed Walks in the Forest and its Line Graph [PDF]

Mathematics Interdisciplinary Research
‎In this paper‎, ‎we deal with calculating the laplacian coefficients of a finite simple graph $G$ with the Laplacian polynomial $\psi(G,\lambda) = \sum_{k=0}^{n}(-1)^{n-k}c_k\lambda^k$‎.
Ali Ghalavand, Alireza Ashrafi
doaj   +1 more source

On a Class of Laplacian Integral Graphs

, 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, M Vinay, M Vinay (5524778), Rüttimann, Linus (5524775)   +3 more
core   +1 more source

New bounds for the signless Laplacian spread [PDF]

, 2019
© 2018 Elsevier Inc.Let G be an undirected simple graph. The signless Laplacian spread of G is defined as the maximum distance of pairs of its signless Laplacian eigenvalues.
Leal, Laura, Robbiano, María, Dahl, Geir, Andrade, Enide, Milovanović, Emina, Bozkurt Altindağ, Serife B., Matejić, Marjan, Milovanović, Igor   +7 more
core   +1 more source

A two‐stage model for precise identification and Gleason grading of clinically significant prostate cancer: a hybrid approach

Journal of Medical Radiation Sciences, Volume 72, Issue 1, Page 93-105, March 2025.
This study developed a two‐stage model using radiomics‐based multiparametric MRI and clinical indicators to help identify and grade clinically significant prostate cancer. The model showed promising levels of diagnostic accuracy and predictive performance.
Yuyan Zou, Xuechun Wang, Fen Ma, Xulun Liu, Chunyue Jiao, Zhen Kang, Jingjing Cui, Yang Zhang, Yan Xie, Lei Chen, Ronghua Tian   +10 more
wiley   +1 more source

Resolvent kernel for the Kohn Laplacian on Heisenberg groups

Electronic Journal of Differential Equations, 2002
We present a formula that relates the Kohn Laplacian on Heisenberg groups and the magnetic Laplacian. Then we obtain the resolvent kernel for the Kohn Laplacian and find its spectral density.
Neur Eddine Askour, Zouhair Mouayn
doaj  

Inertias of Laplacian matrices of weighted signed graphs

Special Matrices, 2019
We study the sets of inertias achieved by Laplacian matrices of weighted signed graphs. First we characterize signed graphs with a unique Laplacian inertia.
Monfared K. Hassani, MacGillivray G., Olesky D. D., van den Driessche P.   +3 more
doaj   +1 more source

A dynamic p-Laplacian

We generalise the dynamic Laplacian introduced in (Froyland, 2015) to a dynamic p-Laplacian, in analogy to the generalisation of the standard 2-Laplacian to the standard p-Laplacian for p>1.
Junge, Oliver, Koltai, Péter, Froyland, Gary, Unanue, Alvaro de Diego   +3 more
core   +1 more source

Traveling Fronts for (q,r)$(q, r)$‐Relativistic Operators: Existence and Asymptotic Properties

Mathematische Nachrichten, EarlyView.
ABSTRACT A new reaction–diffusion model governed by a (q,r)$(q, r)$‐relativistic type diffusion, generalizing the p$p$‐relativistic one and encompassing singular and/or degenerate diffusivity, is introduced. In the monostable case, some existence results for (decreasing) fronts are then provided, exploiting the study of a suitable two‐point problem ...
Pavel Drábek, Maurizio Garrione, Michaela Zahradníková   +2 more
wiley   +1 more source

Simulation Of The Rate-Distortion Behaviour Of A Memoryless

, 2002
In the context of transform coding of still images, the distribution of high frequency transform coefficients has been approximated by a Laplacian distribution.
Laplacian Source Nasir
core