scholarly journals Multiple positive solutions of singular and critical elliptic problem in $${\mathbb{R}^2}$$ with discontinuous nonlinearities

2013 ◽  
Vol 20 (6) ◽  
pp. 1831-1850 ◽  
Author(s):  
K. Sreenadh ◽  
Sweta Tiwari
Keyword(s):  
Positive Solutions ◽  
Elliptic Problem ◽  
Multiple Positive Solutions ◽  
Discontinuous Nonlinearities

MULTIPLE POSITIVE SOLUTIONS OF NONLINEAR EIGENVALUE PROBLEMS ASSOCIATED TO A CLASS OF p-LAPLACIAN LIKE OPERATORS

2003 ◽  
Vol 05 (05) ◽  
pp. 737-759 ◽  
Author(s):  
NOBUYOSHI FUKAGAI ◽  
KIMIAKI NARUKAWA
Keyword(s):  
Positive Solutions ◽  
Elliptic Problem ◽  
Eigenvalue Problems ◽  
Multiple Positive Solutions ◽  
Combined Effects ◽  
Nonlinear Eigenvalue Problems ◽  
Quasilinear Elliptic Problem ◽  
Quasilinear Elliptic ◽  
Nonlinear Eigenvalue

This paper deals with positive solutions of a class of nonlinear eigenvalue problems. For a quasilinear elliptic problem (#) - div (ϕ(|∇u|)∇u) = λf(x,u) in Ω, u = 0 on ∂Ω, we assume asymptotic conditions on ϕ and f such as ϕ(t) ~ tp0-2, f(x,t) ~ tq0-1as t → +0 and ϕ(t) ~ tp1-2, f(x,t) ~ tq1-1as t → ∞. The combined effects of sub-nonlinearity (p0> q0) and super-nonlinearity (p1< q1) with the subcritical term f(x,u) imply the existence of at least two positive solutions of (#) for 0 < λ < Λ.

Existence of Multiple Positive Solutions for N-Laplacian in a Bounded Domain in ℝN

2005 ◽  
Vol 5 (1) ◽  
Author(s):  
S. Prashanth ◽  
K. Sreenadh
Keyword(s):  
Variational Methods ◽  
Bounded Domain ◽  
Positive Solutions ◽  
Exponential Type ◽  
Elliptic Problem ◽  
Multiplicity Result ◽  
Multiple Positive Solutions ◽  
Quasilinear Elliptic Problem ◽  
Quasilinear Elliptic

AbstractLet Ω be a bounded domain in ℝIn this article we show the existence of at least two positive solutions for the following quasilinear elliptic problem with an exponential type nonlinearity:We use Monotonicity and Variational methods to obtain this multiplicity result.

scholarly journals Existence and Multiplicity of Positive Solutions for Dirichlet Problems in Unbounded Domains

2007 ◽  
Vol 2007 ◽  
pp. 1-21
Author(s):  
Tsung-Fang Wu
Keyword(s):  
Positive Solutions ◽  
Elliptic Problem ◽  
Ground State ◽  
Unbounded Domains ◽  
Ground State Solution ◽  
Multiple Positive Solutions ◽  
Dirichlet Problems ◽  
Existence And Multiplicity ◽  
Sobolev Constant ◽  
Multiplicity Of Positive Solutions

We consider the elliptic problem−Δu+u=b(x)|u|p−2u+h(x)inΩ,u∈H01(Ω), where2<p<(2N/(N−2)) (N≥3), 2<p<∞ (N=2), Ωis a smooth unbounded domain inℝN, b(x)∈C(Ω), andh(x)∈H−1(Ω). We use the shape of domainΩto prove that the above elliptic problem has a ground-state solution if the coefficientb(x)satisfiesb(x)→b∞>0as|x|→∞andb(x)≥cfor some suitable constantsc∈(0,b∞), andh(x)≡0. Furthermore, we prove that the above elliptic problem has multiple positive solutions if the coefficientb(x)also satisfies the above conditions,h(x)≥0and0<‖h‖H−1<(p−2)(1/(p−1))(p−1)/(p−2)[bsupSp(Ω)]1/(2−p), whereS(Ω)is the best Sobolev constant of subcritical operator inH01(Ω)andbsup=supx∈Ωb(x).

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