Results 31 to 40 of about 317,601 (325)

Study on a class of Schrödinger elliptic system involving a nonlinear operator

open access: yesNonlinear Analysis, 2020
This paper considers a class of Schrödinger elliptic system involving a nonlinear operator. Firstly, under the simple condition on and ', we prove the existence of the entire positive bounded radial solutions.
Guotao Wang   +3 more
doaj   +1 more source

Classification of positive radial solutions to a weighted biharmonic equation

open access: yesCommunications on Pure & Applied Analysis, 2021
<p style='text-indent:20px;'>In this paper, we consider the weighted fourth order equation</p><p style='text-indent:20px;'><disp-formula> <label/> <tex-math id="FE1"> \begin{document}$ \Delta(|x|^{-\alpha}\Delta u)+\lambda \text{div}(|x|^{-\alpha-2}\nabla u)+\mu|x|^{-\alpha-4}u = |x|^\beta u^p\quad \text{in} \quad ...
openaire   +4 more sources

Positive radial solutions for a noncooperative resonant nuclear reactor model with sign-changing nonlinearities

open access: yesJournal of Inequalities and Applications, 2021
This paper is concerned with the existence of positive radial solutions of the following resonant elliptic system: { − Δ u = u v + f ( | x | , u ) , 0 < R 1 < | x | < R 2 , x ∈ R N , − Δ v = c g ( u ) − d v , 0 < R 1 < | x | < R 2 , x ∈ R N , ∂ u ∂ n = 0
Ruipeng Chen   +3 more
doaj   +1 more source

Positive radial solutions for quasilinear biharmonic equations

open access: yesComputers & Mathematics with Applications, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Behavior of positive radial solutions for quasilinear elliptic equations [PDF]

open access: yesProceedings of the American Mathematical Society, 2000
We establish a necessary and sufficient condition so that positive radial solutions to − div ( A ( | ∇ u | ) ∇ u ) = f ( u ) , in    
Garcia Huidobro, M   +2 more
openaire   +4 more sources

Refined asymptotics for constant scalar curvature metrics with isolated singularities

open access: yes, 1998
We consider the asymptotic behaviour of positive solutions u of the conformal scalar curvature equation, \Delta u + n(n-2)/4 u^{(n+2)(n-2) = 0, in the neighbourhood of isolated singularities in the standard Euclidean ball.
Korevaar, Nick   +3 more
core   +2 more sources

On a radial positive solution to a nonlocal elliptic equation

open access: yesTopological Methods in Nonlinear Analysis, 2003
The paper deals with Dirichlet boundary value problem for the nonlinear Poisson equation with nonlocal term \[ - \Delta u = f (u, \int_U g \circ u) \] \[ u| _{\partial U} = 0, \] where \(U\) is assumed to be an annulus or a ball. Existence of solutions is obtained via fixed point theorems for increasing compact operators.
Fijałkowski, Piotr, Przeradzki, Bogdan
openaire   +3 more sources

On the asymptotic shape of solutions to Neumann problems for non-cooperative parabolic systems

open access: yes, 2014
We consider a class of nonautonomous parabolic competition-diffusion systems on bounded radial domains under Neumann boundary conditions. We show that, if the initial profiles satisfy a reflection inequality with respect to a hyperplane, then global ...
Saldaña, Alberto, Weth, Tobias
core   +1 more source

Sign-changing bubble-tower solutions to fractional semilinear elliptic problems [PDF]

open access: yes, 2019
We study the asymptotic and qualitative properties of least energy radial sign-changing solutions to fractional semilinear elliptic problems of the form \[ \begin{cases} (-\Delta)^s u = |u|^{2^*_s-2-\varepsilon}u &\text{in } B_R, \\ u = 0 &\text{in ...
Cora, Gabriele, Iacopetti, Alessandro
core   +2 more sources

Increasing radial solutions for Neumann problems without growth restrictions

open access: yes, 2011
We study the existence of positive increasing radial solutions for superlinear Neumann problems in the ball. We do not impose any growth condition on the nonlinearity at infinity and our assumptions allow for interactions with the spectrum.
Amann   +17 more
core   +1 more source

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