Results 121 to 130 of about 246,310 (302)

On the Eigenvalues and Energy of the Seidel and Seidel Laplacian Matrices of Graphs

Discrete Dynamics in Nature and Society
Let SΓ be a Seidel matrix of a graph Γ of order n and let DΓ=diagn−1−2d1,n−1−2d2,…,n−1−2dn be a diagonal matrix with di denoting the degree of a vertex vi in Γ. The Seidel Laplacian matrix of Γ is defined as SLΓ=DΓ−SΓ.
J. Askari, Kinkar Chandra Das, Yilun Shang   +2 more
doaj   +1 more source

Correction to: Nodal set of strongly competition systems with fractional Laplacian [PDF]

, 2018
Shan Zhang, Zuhan Liu
openalex   +1 more source

Asymptotics for the Spectrum of the Laplacian in Thin Bars with Varying Cross Sections

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT We consider spectral problems for the Laplace operator in 3D rod structures with a small cross section of diameter O(ε)$$ O\left(\varepsilon \right) $$, ε$$ \varepsilon $$ being a positive parameter. The boundary conditions are Dirichlet (Neumann, respectively) on the bases of this structure, and Neumann on the lateral boundary.
Pablo Benavent‐Ocejo, Delfina Gómez, Maria‐Eugenia Pérez‐Martínez   +2 more
wiley   +1 more source

Unifying adjacency, Laplacian, and signless Laplacian theories

Ars Mathematica Contemporanea
The final version of the article to be appear in Ars Mathematica ...
Samanta, Aniruddha, Deepshikha, Das, Kinkar Chandra   +2 more
openaire   +3 more sources

Robustness Assessment of Public Transport Networks in Various Graph Representations: Systematic Review, Decision Support, and Case Study

Networks, EarlyView.
ABSTRACT The analysis of certain properties of the underlying graph of a public transport network generates insights about the network's structure. Hereby, the choice of the graph representation depends on a trade‐off between complexity reduction and information preservation to adequately model a public transport network.
Michael Palk, Stefan Voß, Raka Jovanovic   +2 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  

Oscillatory Property of Solutions for p(t)-Laplacian Equations

Journal of Inequalities and Applications, 2007
We consider the oscillatory property of the following p(t)-Laplacian equations −(|u'|p(t)−2u')'=1/tθ(t)g(t,u), t>0. Since there is no Picone-type identity for p(t)- Laplacian equations, it is an unsolved problem that whether the Sturmian ...
Qihu Zhang
doaj   +1 more source

POSITIVE SOLUTIONS FOR A <i>P</i>-LAPLACIAN TYPE SYSTEM OF IMPULSIVE FRACTIONAL BOUNDARY VALUE PROBLEM<inline-formula><tex-math id="M1">$ ^* $</tex-math></inline-formula>

, 2020
Dongping Li, Fangqi Chen, Yukun An
openalex   +1 more source

Nodal Sets of Eigenfunctions of Sub-Laplacians [PDF]

, 2023
Suresh Eswarathasan, Cyril Letrouit
openalex   +1 more source

When species are lost but functions persist: a trait‐based perspective on Wadden Sea bird diversity dynamics

Oikos, EarlyView.
Biodiversity faces several global threats and communities are likely to show complex delayed responses. Accurately measuring these lags is critical to properly understand diversity dynamics. Here, we investigated these delays with minimal data availability and found critical mismatches between the temporal dynamics of taxonomic and functional diversity
Lucie Kuczynski, Ana Maria Bastidas‐Urrutia, Jan Bernhard Kalusche, Christian Hof, Gregor Scheiffarth, Alexey Ryabov, Helmut Hillebrand   +6 more
wiley   +1 more source