Results 11 to 20 of about 15,562 (203)

Isolated boundary singularities of semilinear elliptic equations [PDF]

open access: yesCalculus of Variations and Partial Differential Equations, 2010
Given a smooth domain $ \subset\RR^N$ such that $0 \in \partial $ and given a nonnegative smooth function $ $ on $\partial $, we study the behavior near 0 of positive solutions of $- u=u^q$ in $ $ such that $u = $ on $\partial \setminus\{0\}$. We prove that if $\frac{N+1}{N-1} < q < \frac{N+2}{N-2}$, then $u(x)\leq C \abs{x}^{-\frac{2}{q-
Ponce, Augusto   +2 more
openaire   +3 more sources

Semilinear elliptic equations in thin regions with terms concentrating on oscillatory boundaries [PDF]

open access: yes, 2018
In this work we study the behavior of a family of solutions of a semilinear elliptic equation, with homogeneous Neumann boundary condition, posed in a two-dimensional oscillating thin region with reaction terms concentrated in a neighborhood of the ...
Arrieta, José M.   +2 more
core   +3 more sources

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

A Concentration Phenomenon for Semilinear Elliptic Equations [PDF]

open access: yesArchive for Rational Mechanics and Analysis, 2012
For a domain $ \subset\dR^N$ we consider the equation $ - u + 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 $ $ and negative outside, and such that the sets $\{Q_n>0\}$ shrink to a point $x_0\in $ as $n\to\infty ...
Ackermann, Nils, Szulkin, Andrzej
openaire   +2 more sources

Exact behavior around isolated singularity for semilinear elliptic equations with a log-type nonlinearity

open access: yesAdvances in Nonlinear Analysis, 2018
We study the semilinear elliptic ...
Ghergu Marius   +2 more
doaj   +1 more source

Splitting theorems, symmetry results and overdetermined problems for Riemannian manifolds [PDF]

open access: yes, 2012
Our work proposes a unified approach to three different topics in a general Riemannian setting: splitting theorems, symmetry results and overdetermined elliptic problems. By the existence of a stable solution to the semilinear equation $-\Delta u = f(u)$
Farina, Alberto   +2 more
core   +2 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 domain in R N {\mathbb {R}^N} , N ⩾ 1 N \geqslant 1 . We consider the problem of finding nontrivial solutions to the elliptic boundary value problem \[
del Pino, Manuel A., Felmer, Patricio L.
openaire   +2 more sources

Existence of nonminimal solutions to an inhomogeneous elliptic equation with supercritical nonlinearity

open access: yesAdvanced Nonlinear Studies, 2023
In our previous paper [K. Ishige, S. Okabe, and T. Sato, A supercritical scalar field equation with a forcing term, J. Math. Pures Appl. 128 (2019), pp.
Ishige Kazuhiro   +2 more
doaj   +1 more source

Positive radial symmetric solutions for a class of elliptic problems with critical exponent and -1 growth

open access: yesAdvances in Nonlinear Analysis, 2021
In this paper, we consider a class of semilinear elliptic equation with critical exponent and -1 growth. By using the critical point theory for nonsmooth functionals, two positive solutions are obtained. Moreover, the symmetry and monotonicity properties
Lei Chun-Yu, Liao Jia-Feng
doaj   +1 more source

One-dimensional symmetry and Liouville type results for the fourth order Allen-Cahn equation in R$^N$ [PDF]

open access: yes, 2016
In this paper, we prove an analogue of Gibbons' conjecture for the extended fourth order Allen-Cahn equation in R N , as well as Liouville type results for some solutions converging to the same value at infinity in a given direction.
A. A. Wheeler   +45 more
core   +5 more sources

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