Results 271 to 280 of about 36,348 (314)

Nodal solutions of a p-Laplacian equation

Proceedings of the London Mathematical Society, 2005
Summary: We prove that the \(p\)-Laplacian problem \(-\Delta_p u = f(x, u)\), with \(u \in W_0^{1,p}(\Omega)\) on a bounded domain \(\Omega \subset \mathbb R^N\), with \(p > 1\) arbitrary, has a nodal solution provided that \(f : \Omega\times\mathbb R \to \mathbb R\) is subcritical, and \(f(x, t) / |t|^{p-2}\) is superlinear.
Thomas Bartsch   +2 more
exaly   +3 more sources

Solution of inverse nodal problems

Inverse Problems, 1989
We show that the coefficients in a second-order differential equation can be determined from the positions of the nodes for the eigenfunctions. We prove uniqueness results, derive approximate solutions, give error bounds and present numerical experiments.
Hald, Ole H., McLaughlin, Joyce R.
openaire   +2 more sources

On the Geometric Measure of Nodal Sets of Solutions

Journal of Partial Differential Equations, 1994
The authors prove several results on the Hausdorff measure of nodal sets of solutions \(u\) of the equation \(Lu=0\) in the unit ball \(B\subset \mathbb{R}^ n\). Here \(L\) belongs to a special class of elliptic or parabolic operators and \(u\) is assumed to have a certain compactness property.
Han, Qing, Lin, Fanghua
openaire   +2 more sources

Localized Nodal Solutions for Schrödinger-Poisson Systems

Acta Mathematica Scientia, 2022
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wang, Xing, He, Rui, Liu, Xiangqing
openaire   +2 more sources

Nodal Solutions for Indefinite Robin Problems

Bulletin of the Malaysian Mathematical Sciences Society, 2017
Given a bounded domain \(\Omega \subseteq \mathbb{R}^N\) with a \(C^2\)-boundary, the authors study semilinear Robin problems of the form \[ \begin{cases} -\Delta u(z)+\xi(z)u(z) = f(z,u(z)) &\text{in }\Omega,\\ \frac{\partial u}{\partial n}+\beta(z)u=0 &\text{on }\partial \Omega, \end{cases} \] where the potential function \(\xi\) belongs to \(L^s ...
Filippakis, Michael   +1 more
openaire   +1 more source

Nodal solutions of -Laplacian equations

Nonlinear Analysis: Theory, Methods & Applications, 2007
The aim of this paper is to study the existence of nodal radial solutions for the \(p(x)\)-Laplacian equation of the form \[ \begin{gathered} -\text{div}(|\nabla |^{p(x)-2}\nabla u)+ a(x)|u|^{p(x)-2} u=|u|^{q(x)- 2} u\quad\text{in }\Omega,\\ u\in W^{1,p(x)}_0(\Omega).\end{gathered}\tag{1} \] Using a variational method, the authors prove that, for any ...
Fan, Xianling, Zhao, Yuanzhang
openaire   +1 more source

Nodal solutions for anisotropic \((p, q)\)-equations

Nonlinear Analysis: Real World Applications, 2022
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zeng, Shengda, Papageorgiou, Nikolaos S.
openaire   +2 more sources

Nonexistence of nodal solutions of nonlinear elliptic equations

Nonlinear Analysis: Theory, Methods & Applications, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bae, Soohyun, Pahk, Dae Hyeon
openaire   +1 more source

ON NODAL SOLUTIONS OF THE NONLINEAR SCHRÖDINGER–POISSON EQUATIONS

Communications in Contemporary Mathematics, 2012
In this paper, we are interested in nodal solutions of nonlinear Schrödinger–Poisson equations. In particular, for a given natural number k we construct a radial solution changing sign exactly k-times.
Kim, Seunghyeok, Seok, Jinmyoung
openaire   +2 more sources

Home - About - Disclaimer - Privacy