Results 81 to 90 of about 16,726 (202)

Sub-supersolution theorems for quasilinear elliptic problems: A variational approach

open access: yesElectronic Journal of Differential Equations, 2004
This paper presents a variational approach to obtain sub - supersolution theorems for a certain type of boundary value problem for a class of quasilinear elliptic partial differential equations.
Vy Khoi Le, Klaus Schmitt
doaj  

Ground states of semilinear elliptic equations

open access: yes, 2020
Comments are ...
Caju, Rayssa   +3 more
openaire   +2 more sources

Isolated singularity for semilinear elliptic equations

open access: yesDiscrete & Continuous Dynamical Systems - A, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wei, Lei, Feng, Zhaosheng
openaire   +2 more sources

Symmetry breaking and semilinear elliptic equations

open access: yesJournal of Computational and Applied Mathematics, 1989
Symmetry breaking bifurcations (SBB's) are studied which occur on the radially symmetric solution branches of the semilinear elliptic equation \(\Delta u+\lambda f(u)=0\) on the unit ball in the space \(R^ 3\). A general theory is developed which permits a straightforward calculation of the SBB's.
openaire   +2 more sources

Solutions to nonlinear elliptic equations with a nonlocal boundary condition

open access: yesElectronic Journal of Differential Equations, 2002
We study an elliptic equation and its evolution problem on a bounded domain with nonlocal boundary conditions. Eigenvalue problems, existence, and dynamic behavior of solutions for linear and semilinear equations are investigated.
Yuandi Wang
doaj  

Harnack inequality for non-divergence structure semi-linear elliptic equations

open access: yesAdvances in Nonlinear Analysis, 2018
In this paper we establish a Harnack inequality for non-negative solutions of L⁢u=f⁢(u){Lu=f(u)} where L is a non-divergence structure uniformly elliptic operator and f is a non-decreasing function that satisfies an appropriate growth conditions at ...
Mohammed Ahmed, Porru Giovanni
doaj   +1 more source

Nonexistence of solutions to KPP-type equations of dimension greater than or equal to one

open access: yesElectronic Journal of Differential Equations, 2006
In this article, we consider a semilinear elliptic equations of the form $Delta u+f(u)=0$, where $f$ is a concave function. We prove for arbitrary dimensions that there is no solution bounded in $(0,1)$.
Janos Englander, Peter L. Simon
doaj  

Dimension of the set of positive solutions to nonlinear equations and applications

open access: yesElectronic Journal of Differential Equations, 2016
We study the covering dimension of the set of (positive) solutions to various classes of nonlinear equations involving condensing and A-proper maps. It is based on the nontriviality of the fixed point index of a certain condensing map or on oddness ...
Petronije S. Milojevic
doaj  

On the solution stability of parabolic optimal control problems. [PDF]

open access: yesComput Optim Appl, 2023
Corella AD, Jork N, Veliov VM.
europepmc   +1 more source

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