Results 11 to 20 of about 1,157 (77)

Eigenvalue inequalities for the buckling problem of the drifting Laplacian of arbitrary order

open access: yesAdvances in Nonlinear Analysis, 2022
In this paper, we investigate the buckling problem of the drifting Laplacian of arbitrary order on a bounded connected domain in complete smooth metric measure spaces (SMMSs) supporting a special function, and successfully obtain a general inequality for
Du Feng   +3 more
doaj   +1 more source

On the solutions to p-Poisson equation with Robin boundary conditions when p goes to +∞

open access: yesAdvances in Nonlinear Analysis, 2022
We study the behaviour, when p→+∞p\to +\infty , of the first p-Laplacian eigenvalues with Robin boundary conditions and the limit of the associated eigenfunctions.
Amato Vincenzo   +3 more
doaj   +1 more source

Strict Positivity for the Principal Eigenfunction of Elliptic Operators with Various Boundary Conditions

open access: yesAdvanced Nonlinear Studies, 2020
We consider elliptic operators with measurable coefficients and Robin boundary conditions on a bounded domain Ω⊂ℝd{\Omega\subset\mathbb{R}^{d}} and show that the first eigenfunction v satisfies v⁢(x)≥δ>0{v(x)\geq\delta>0} for all x∈Ω¯{x\in\overline ...
Arendt Wolfgang   +2 more
doaj   +1 more source

Asymptotic behaviour of resonance eigenvalues of the Schrödinger operator with a matrix potential [PDF]

open access: yes, 2015
We will discuss the asymptotic behaviour of the eigenvalues of Schr\"{o}dinger operator with a matrix potential defined by Neumann boundary condition in $L_2^m(F)$, where $F$ is $d$-dimensional rectangle and the potential is a $m \times m$ matrix with $m\
Sedef Karakilicc   +2 more
semanticscholar   +1 more source

Lower bound for the ground state energy of the no-pair Hamiltonian [PDF]

open access: yes, 1997
A lower bound for the ground state energy of a one particle relativistic Hamiltonian - sometimes called no-pair operator - is provided.Comment: 5 pages, 1 figure, 1 table, Latex2e (amssymb,amsmath ...
Bethe   +15 more
core   +2 more sources

Spectral optimization for singular Schrödinger operators

open access: yes, 2020
For several classes of singular Schrödinger operators which can be formally written as −Δ−αδ (x−Γ) we discuss the problem of optimization of their principal eigenvalue with respect to the shape of the interaction support Γ .
P. Exner
semanticscholar   +1 more source

Maximum Principles and ABP Estimates to Nonlocal Lane–Emden Systems and Some Consequences

open access: yesAdvanced Nonlinear Studies, 2021
This paper deals with maximum principles depending on the domain and ABP estimates associated to the following Lane–Emden system involving fractional Laplace operators:
Leite Edir Junior Ferreira
doaj   +1 more source

On the smallest Laplace eigenvalue for naturally reductive metrics on compact simple Lie groups [PDF]

open access: yes, 2019
Eldredge, Gordina and Saloff-Coste recently conjectured that, for a given compact connected Lie group $G$, there is a positive real number $C$ such that $\lambda_1(G,g)\operatorname{diam}(G,g)^2\leq C$ for all left-invariant metrics $g$ on $G$.
Lauret, Emilio Agustin
core   +2 more sources

Spectrum of the Laplacian in narrow tubular neighbourhoods of hypersurfaces with combined Dirichlet and Neumann boundary conditions [PDF]

open access: yes, 2013
We consider the Laplacian in a domain squeezed between two parallel hypersurfaces in Euclidean spaces of any dimension, subject to Dirichlet boundary conditions on one of the hypersurfaces and Neumann boundary conditions on the other.
Krejcirik, David
core   +2 more sources

Almost all Steiner triple systems are almost resolvable

open access: yesForum of Mathematics, Sigma, 2020
We show that for any n divisible by 3, almost all order-n Steiner triple systems admit a decomposition of almost all their triples into disjoint perfect matchings (that is, almost all Steiner triple systems are almost resolvable).
Asaf Ferber, Matthew Kwan
doaj   +1 more source

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