Results 31 to 40 of about 1,677 (103)

Existence of solutions for elliptic equations having natural growth terms in Orlicz spaces

open access: yesAbstract and Applied Analysis, Volume 2004, Issue 12, Page 1031-1045, 2004., 2004
Existence result for strongly nonlinear elliptic equation with a natural growth condition on the nonlinearity is proved.
A. Elmahi, D. Meskine
wiley   +1 more source

Comments on behaviour of solutions of elliptic quasi-linear problems in a neighbourhood of boundary singularities

open access: yesOpen Mathematics, 2017
We have investigated the behaviour of solutions of elliptic quasi-linear problems in a neighbourhood of boundary singularities in bounded and unbounded domains. We found exponents of the solution’s decreasing rate near the boundary singularities.
Bodzioch Mariusz   +2 more
doaj   +1 more source

Landesman-Lazer condition revisited: the influence of vanishing and oscillating nonlinearities [PDF]

open access: yes, 2015
In this paper we deal with semilinear problems at resonance. We present a sufficient condition for the existence of a weak solution in terms of the asymptotic properties of nonlinearity.
Drabek, Pavel, Langerova, Martina
core   +3 more sources

Symmetry and concentration behavior of ground state in axially symmetric domains

open access: yesAbstract and Applied Analysis, Volume 2004, Issue 12, Page 1019-1030, 2004., 2004
We let Ω(r) be the axially symmetric bounded domains which satisfy some suitable conditions, then the ground‐state solutions of the semilinear elliptic equation in Ω(r) are nonaxially symmetric and concentrative on one side. Furthermore, we prove the necessary and sufficient condition for the symmetry of ground‐state solutions.
Tsung-Fang Wu
wiley   +1 more source

Coefficients of singularities of the biharmonic problem of Neumann type: case of the crack

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 5, Page 305-313, 2003., 2003
This paper concerns the biharmonic problem of Neumann type in a sector V. We give a representation of the solution u of the problem in a form of a series u = ∑α∈ECα rα ϕα, and the functions ϕα are solutions of an auxiliary problem obtained by the separation of variables.
Wided Chikouche, Aissa Aibèche
wiley   +1 more source

Unilateral boundary value problems with jump discontinuities

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 30, Page 1933-1941, 2003., 2003
Using the critical point theory of Szulkin (1986), we study elliptic problems with unilateral boundary conditions and discontinuous nonlinearities. We do not use the method of upper and lower solutions. We prove two existence theorems: one when the right‐hand side is nondecreasing and the other when it is nonincreasing.
Nikolaos Halidias
wiley   +1 more source

Worst-case shape optimization for the Dirichlet energy [PDF]

open access: yes, 2016
We consider the optimization problem for a shape cost functional $F(\Omega,f)$ which depends on a domain $\Omega$ varying in a suitable admissible class and on a "right-hand side" $f$. More precisely, the cost functional $F$ is given by an integral which
Bellido, José Carlos   +2 more
core   +3 more sources

Existence of entire explosive positive radial solutions of quasilinear elliptic systems

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 46, Page 2907-2927, 2003., 2003
Our main purpose is to establish that entire explosive positive radial solutions exist for quasilinear elliptic systems. The main results of the present paper are new and extend previous results.
Yang Zuodong
wiley   +1 more source

Hopf's lemma for a class of singular/degenerate PDE-s

open access: yes, 2014
This paper concerns Hopf's boundary point lemma, in certain $C^{1,Dini}$-type domains, for a class of singular/degenerate PDE-s, including $p$-Laplacian.
Mikayelyan, Hayk, Shahgholian, Henrik
core   +1 more source

Symmetry breaking for a problem in optimal insulation [PDF]

open access: yes, 2016
We consider the problem of optimally insulating a given domain $\Omega$ of ${\mathbb{R}}^d$; this amounts to solve a nonlinear variational problem, where the optimal thickness of the insulator is obtained as the boundary trace of the solution.
Bucur, Dorin   +2 more
core   +2 more sources

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