Results 21 to 30 of about 38,445 (215)

Nonlinear conservation laws for the Schrödinger boundary value problems of second order

open access: yesBoundary Value Problems, 2020
In this paper, we apply a reliable combination of maximum modulus method with respect to the Schrödinger operator and Phragmén–Lindelöf method to investigate nonlinear conservation laws for the Schrödinger boundary value problems of second order.
Ming Ren, Shiwei Yun, Zhenping Li
doaj   +1 more source

Hardy-Lieb-Thirring inequalities for fractional Schrödinger operators [PDF]

open access: yes, 2007
We show that the Lieb-Thirring inequalities on moments of negative eigenvalues of Schrödinger-like operators remain true, with possibly different constants, when the critical Hardy-weight C │x│^(-2) is subtracted from the Laplace operator.
Frank, Rupert L.   +2 more
core   +1 more source

Semigroup Maximal Functions, Riesz Transforms, and Morrey Spaces Associated with Schrödinger Operators on the Heisenberg Groups

open access: yesJournal of Function Spaces, 2020
Let L=−Δℍn+V be a Schrödinger operator on the Heisenberg group ℍn, where Δℍn is the sub-Laplacian on ℍn and the nonnegative potential V belongs to the reverse Hölder class Bq with q∈Q/2,∞. Here, Q=2n+2 is the homogeneous dimension of ℍn.
Hua Wang
doaj   +1 more source

Nontrivial Solutions for 4-Superlinear Schrödinger–Kirchhoff Equations with Indefinite Potentials

open access: yesJournal of Function Spaces, 2021
This paper is devoted to the 4-superlinear Schrödinger–Kirchhoff equation −a+b∫ℝ3∇u2dxΔu+Vxu=fx,u,in ℝ3, where a>0, b≥0. The potential V here is indefinite so that the Schrödinger operator −Δ+V possesses a finite-dimensional negative space.
Wei Chen, Yue Wu
doaj   +1 more source

The Boundedness of Marcinkiewicz Integrals Associated with Schrödinger Operator on Morrey Spaces

open access: yesJournal of Function Spaces, 2014
Let L=-Δ+V be a Schrödinger operator, where V belongs to some reverse Hölder class. The authors establish the boundedness of Marcinkiewicz integrals associated with Schrödinger operators and their commutators on Morrey spaces.
Dongxiang Chen, Fangting Jin
doaj   +1 more source

Computing the q-Numerical Range of Differential Operators

open access: yesJournal of Applied Mathematics, 2020
A linear operator on a Hilbert space may be approximated with finite matrices by choosing an orthonormal basis of thez Hilbert space. In this paper, we establish an approximation of the q-numerical range of bounded and unbounnded operator matrices by ...
Ahmed Muhammad, Faiza Abdullah Shareef
doaj   +1 more source

Some Spectral Properties of Schrödinger Operators on Semi Axis

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2023
The main aim of this work is to investigate some spectral properties of Schrödinger operators on semi axis. We first present the Schrödinger equation with a piecewise continuous potential function q so that the problem differs from the classical ...
İbrahim Erdal
doaj   +1 more source

Uniformly convergence of the spectral expansions of the Schrodinger operator on a closed domain [PDF]

open access: yes, 2013
In this work uniformly convergent problems of the eigenfunction expansions of the Schrödinger operator −Δ+q(y1, y2) with singular potential from W12(Ω) are investigated.
Ahmedov, Anvarjon A.   +2 more
core   +1 more source

Applications of maximum modulus method and Phragmén–Lindelöf method for second-order boundary value problems with respect to the Schrödinger operator

open access: yesBoundary Value Problems, 2019
In this paper, we present a reliable combination of the maximum modulus method with respect to the Schrödinger operator (Meng in J. Syst. Sci. Complex.
Zhen Liu
doaj   +1 more source

Wannier functions and discrete NLS equations for nematicons

open access: yesMathematics in Engineering, 2019
We derive nonlocal discrete nonlinear Schrödinger (DNLS) equations for laser beam propagation in optical waveguide arrays that use a nematic liquid crystal substrate.
José Antonio Vélez-Pérez   +1 more
doaj   +1 more source

Home - About - Disclaimer - Privacy