Results 21 to 30 of about 1,290,485 (220)

An approximation theorem for solutions of degenerate semilinear elliptic equations [PDF]

open access: yes, 2017
The main result establishes that a weak solution of degenerate semilinear elliptic equations can be approximated by a sequence of solutions for non-degenerate semilinear elliptic equations.
Albo Carlos Cavalheiro   +1 more
core   +2 more sources

Existence of nontrivial solutions for semilinear problems with strictly differentiable nonlinearity [PDF]

open access: yes, 2006
The existence of a nontrivial solution for semilinear elliptic problems with strictly differentiable nonlinearity is proved. A result of homological linking under nonstandard geometrical assumption is also shown.
Lancelotti, Sergio   +2 more
core   +1 more source

Semilinear elliptic equations and supercritical growth

open access: yesJournal of Differential Equations, 1987
\textit{H. Brezis} and \textit{L. Nirenberg} have proved the existence of positive solutions of the problem \(\Delta \tilde u+\lambda \tilde u+\tilde u^ p=0\) in \(\Omega\) and \(\tilde u=0\) on \(\partial \Omega\) for \(p\leq p_ c=(n+2)/(n-2)\), when the embedding of \(H^ 1_ 0(\Omega)\) in \(L^{p+1}(\Omega)\) is continuous [Commun. Pure Appl. Math. 36,
Budd, C, Norbury, J
openaire   +1 more source

Remarks on a semilinear elliptic equation on Rn [PDF]

open access: yesJournal of Differential Equations, 1988
On etudie l'equation elliptique semi-lineaire Δu−u+Q|u| P−1 u=0 dans R n , u≥0, u¬=0 dans R n et u→0 a l'infini avec p telle que ...
openaire   +2 more sources

Semilinear Poisson problems in Sobolev-Besov spaces on Lipschitz domains [PDF]

open access: yes, 2002
Extending recent work for the linear Poisson problem for the Laplacian in the framework of Sobolev-Besov spaces on Lipschitz domains by Jerison and Kenig [16], Fabes, Mendez and Mitrea [9], and Mitrea and Taylor [30], here we take up the task of ...
M. Mitrea   +3 more
core   +1 more source

Semilinear Equations with Discrete Spectrum [PDF]

open access: yes, 2004
This is an overview of the solvability of semilinear equations where the linear part has discrete spectrum. Semilinear elliptic and hyperbolic equations, as well as Hammerstein integral equations, are used as motivating examples.
Castro, Alfonso
core   +2 more sources

Semilinear elliptic equations and fixed points [PDF]

open access: yesProceedings of the American Mathematical Society, 2004
In this paper, we deal with a class of semilinear elliptic equation in a bounded domain $Ω\subset\mathbb{R}^N$, $N\geq 3$, with $C\sp{1,1}$ boundary. Using a new fixed point result of the Krasnoselskii's type for the sum of two operators, an existence principle of strong solutions is proved. We give two examples where the nonlinearity can be critical.
openaire   +3 more sources

On Singular Semilinear Elliptic Equations

open access: yesJournal of Mathematical Analysis and Applications, 1993
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

On a Class of Semilinear Elliptic Equations in R

open access: yesJournal of Differential Equations, 2002
AbstractWe establish that for n⩾3 and p>1, the elliptic equation Δu+K(x)up=0 in Rn possesses separated positive entire solutions of infinite multiplicity, provided that a locally Hölder continuous function K⩾0 in Rn\{0}, satisfies K(x)=O(∣x∣σ) at x=0 for some σ>−2, and K(x)=c∣x∣−2+O(∣x∣−n[log∣x∣]q) near ∞ for some constants c>0 and q>0.
Bae, Soohyun, Chang, Tong Keun
openaire   +1 more source

Exponential Dichotomies for Solitary-Wave Solutions of Semilinear Elliptic Equations on Infinite Cylinders [PDF]

open access: yes, 1996
In applications, solitary-wave solutions of semilinear elliptic equations \Deltau + g(u; ru) = 0 (x; y) 2 IR \Theta\Omega in infinite cylinders frequently arise as travelling waves of parabolic equations.
Scheel, Arnd   +5 more
core   +1 more source

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