Results 121 to 130 of about 306,909 (255)

Existence and multiplicity of solutions for semilinear elliptic equations with Neumann boundary conditions

open access: yesElectronic Journal of Differential Equations, 2015
This article shows the existence of solutions by the least action principle, for semilinear elliptic equations with Neumann boundary conditions, under critical growth and local coercive conditions.
Qin Jiang, Sheng Ma
doaj  

A global bifurcation result for a semilinear elliptic equation

open access: yesJournal of Mathematical Analysis and Applications, 2010
AbstractWe consider the problem{−Δu=up+λuin A,u>0in A,u=0on ∂A, where A is an annulus of RN, N⩾2, p∈(1,+∞) and λ∈(−∞,0]. Recent results (Gladiali et al., 2009 [5]) ensure that there exists a sequence of values of the exponent {pk} at which nonradial bifurcation from the radial solution occurs.
openaire   +3 more sources

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  

Solving Fredholm Integral Equations Using Deep Learning. [PDF]

open access: yesInt J Appl Comput Math, 2022
Guan Y, Fang T, Zhang D, Jin C.
europepmc   +1 more source

Concentration and dynamic system of solutions for semilinear elliptic equations

open access: yesElectronic Journal of Differential Equations, 2003
In this article, we use the concentration of solutions of the semilinear elliptic equations in axially symmetric bounded domains to prove that the equation has three positive solutions. One solution is y-symmetric and the other are non-axially symmetric.
Tsung-fang Wu
doaj  

On oscillating radial solutions for non-autonomous semilinear elliptic equations

open access: yesAIMS Mathematics
We consider semilinear elliptic equations of the form $ \Delta u + f(|x|, u) = 0 $ on $ {\mathbb{R}}^{N} $ with $ f(|x|, u) = q(|x|)g(u) $. These type of equations arise in various problems in applied mathematics, and particularly in the study of ...
H. Al Jebawy, H. Ibrahim, Z. Salloum
doaj   +1 more source

A singular perturbation result for a class of periodic-parabolic BVPs

open access: yesOpen Mathematics
In this article, we obtain a very sharp version of some singular perturbation results going back to Dancer and Hess [Behaviour of a semilinear periodic-parabolic problem when a parameter is small, Lecture Notes in Mathematics, Vol. 1450, Springer-Verlag,
Cano-Casanova Santiago   +2 more
doaj   +1 more source

Dirac-harmonic maps with potential. [PDF]

open access: yesLett Math Phys, 2022
Branding V.
europepmc   +1 more source

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