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Topological Derivatives for Semilinear Elliptic Equations [PDF]

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2009
Topological Derivatives for Semilinear Elliptic EquationsThe form of topological derivatives for an integral shape functional is derived for a class of semilinear elliptic equations. The convergence of finite element approximation for the topological derivatives is shown and the error estimates in theL∞norm are obtained.
Mohamed Iguernane   +4 more
openaire   +3 more sources

Nondegeneracy of the bubble solutions for critical equations involving the polyharmonic operator

open access: yesBoundary Value Problems, 2023
We reprove a result by Bartsch, Weth, and Willem (Calc. Var. Partial Differ. Equ. 18(3):253–268, 2003) concerning the nondegeneracy of bubble solutions for a critical semilinear elliptic equation involving the polyharmonic operator.
Dandan Yang   +3 more
doaj   +1 more source

On a Model Semilinear Elliptic Equation in the Plane [PDF]

open access: yesJournal of Mathematical Sciences, 2016
This paper deals with the blow-up problem for a model semilinear equation of the type \[ \text{div}(A(z)\nabla u)= e^u \] in a simply connected domain \(\Omega\subset \mathbb{C}^1\). \(A(z)\) is a \(2\times 2\) symmetric uniformly elliptic matrix with measurable entries and \(\text{det\,}A=1\).
Gutlyanskii, V.Y.   +2 more
openaire   +3 more sources

Solutions of Semilinear Elliptic Equations in Tubes [PDF]

open access: yesJournal of Geometric Analysis, 2012
Given a smooth compact k-dimensional manifold Λembedded in $\mathbb {R}^m$, with m\geq 2 and 1\leq k\leq m-1, and given ε>0, we define B_ε(Λ) to be the geodesic tubular neighborhood of radius εabout Λ. In this paper, we construct positive solutions of the semilinear elliptic equation Δu + u^p = 0 in B_ε(Λ) with u = 0 on \partial B_ε(Λ), when the ...
Frank Pacard   +2 more
openaire   +3 more sources

Multiple solutions for a semilinear elliptic equation [PDF]

open access: yesTransactions of the American Mathematical Society, 1995
Let Ω \Omega be a bounded, smooth ...
del Pino, Manuel A., Felmer, Patricio L.
openaire   +2 more sources

Semilinear problems with bounded nonlinear term

open access: yesBoundary Value Problems, 2005
We solve boundary value problems for elliptic semilinear equations in which no asymptotic behavior is prescribed for the nonlinear term.
Martin Schechter
doaj   +2 more sources

A Concentration Phenomenon for Semilinear Elliptic Equations [PDF]

open access: yesArchive for Rational Mechanics and Analysis, 2012
For a domain $Ω\subset\dR^N$ we consider the equation $ -Δu + V(x)u = Q_n(x)\abs{u}^{p-2}u$ with zero Dirichlet boundary conditions and $p\in(2,2^*)$. Here $V\ge 0$ and $Q_n$ are bounded functions that are positive in a region contained in $Ω$ and negative outside, and such that the sets $\{Q_n>0\}$ shrink to a point $x_0\inΩ$ as $n\to\infty$.
Ackermann, Nils, Szulkin, Andrzej
openaire   +2 more sources

The structure of solutions of a semilinear elliptic equation [PDF]

open access: yesTransactions of the American Mathematical Society, 1992
We give a complete classification of solutions of the elliptic equation Δ u
Cheng, Kuo-Shung, Lin, Tai-Chia
openaire   +2 more sources

Estimations of a differential operator in spectral parameter problems for elliptic equations with discontinuous nonlinearities

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2010
The basic boundary value problems for semilinear equations of elliptic type with a spectral parameter and discontinuous nonlinearity are considered in a bounded domain with a sufficiently smooth boundary.
Dmitrij К Potapov
doaj   +3 more sources

On the existence of multiple positive entire solutions for a class of quasilinear elliptic equations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
Our goal is to establish the theorems of existence and multiple of positive entire solutions for a class quasilinear elliptic equations in ℝN with the Schauder-Tychonoff fixed point theorem as the principal tool.
Yang Zuodong
doaj   +1 more source

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