Results 31 to 40 of about 269 (76)

Multiplicity of positive solutions to semilinear elliptic boundary value problems

open access: yesAbstract and Applied Analysis, Volume 4, Issue 3, Page 195-208, 1999., 1999
We study semilinear elliptic boundary value problems of one parameter dependence where the number of positive solutions is discussed. Our main purpose is to characterize the critical value given by the infimum of such parameters for which positive solutions exist.
Kenichiro Umezu
wiley   +1 more source

Some hemivariational inequalities in the Euclidean space

open access: yesAdvances in Nonlinear Analysis, 2019
The purpose of this paper is to study the existence of weak solutions for some classes of hemivariational problems in the Euclidean space ℝd (d ≥ 3). These hemivariational inequalities have a variational structure and, thanks to this, we are able to find
Bisci Giovanni Molica, Repovš Dušan
doaj   +1 more source

Semilinear elliptic equations having asymptotic limits at zero and infinity

open access: yesAbstract and Applied Analysis, Volume 4, Issue 4, Page 231-242, 1999., 1999
We obtain nontrivial solutions for semilinear elliptic boundary value problems having resonance both at zero and at infinity, when the nonlinear term has asymptotic limits.
Kanishka Perera, Martin Schechter
wiley   +1 more source

Sign-changing solutions for some nonlinear problems with strong resonance

open access: yesBoundary Value Problems, 2011
By means of critical point and index theories, we obtain the existence and multiplicity of sign-changing solutions for some elliptic problems with strong resonance at infinity, under weaker conditions.
Qian Aixia
doaj  

Blow up solutions for two-dimensional semilinear elliptic problem of Liouville type with nonlinear gradient terms

open access: yesDemonstratio Mathematica
This work investigates the existence of singular limit solutions for nonlinear elliptic systems. Our main approach focuses on using the nonlinear domain decomposition method to establish a new Liouville-type result.
Baraket Sami   +3 more
doaj   +1 more source

On certain nonlinear elliptic systems with indefinite terms

open access: yesElectronic Journal of Differential Equations, 2002
We consider an elliptic quasi linear systems with indefinite term on a bounded domain. Under suitable conditions, existence and positivity results for solutions are given. Submitted April 2, 2002. Published October 2, 2002.
Ahmed Bensedik, Mohammed Bouchekif
doaj  

On the Keldys-Fichera boundary-value problem for degenerate quasilinear elliptic equations

open access: yesElectronic Journal of Differential Equations, 2002
We prove existence and uniqueness theorems for the Keldys-Fichera boundary-value problem using pseudo-monotone operators. The equation studied here is quasilinear, elliptic, and its set of degenerate points may be of non-zero measure.
Zu-Chi Chen, Benjin Xuan
doaj  

Radiative effects for some bidimensional thermoelectric problems

open access: yesAdvances in Nonlinear Analysis, 2016
There are two main objectives in this paper. One is to find sufficient conditions to ensure the existence of weak solutions for some bidimensional thermoelectric problems.
Consiglieri Luisa
doaj   +1 more source

Multiple Positive Solutions to a Kirchhoff Type Problem Involving a Critical Nonlinearity in ℝ3

open access: yesAdvanced Nonlinear Studies, 2017
In this paper, we investigate a class of Kirchhoff type problems in ℝ3{\mathbb{R}^{3}} involving a critical nonlinearity, namely,
Zhong Xiao-Jing, Tang Chun-Lei
doaj   +1 more source

The effect of the graph topology on the existence of multipeak solutions for nonlinear Schrödinger equations

open access: yes, 2001
Abstract and Applied Analysis, Volume 6, Issue 2, Page 71-99, 2001.
E. N. Dancer, Kee Y. Lam, Shusen Yan
wiley   +1 more source

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