Results 1 to 10 of about 5,731,613 (78)
Radial positive solutions for a nonpositone problem in a ball
Electronic Journal of Differential Equations, 2009 In this paper, we study the existence of radial positive solutions for a nonpositone problem when the nonlinearity is superlinear and may have more than one zero.
Said Hakimi, Abderrahim Zertiti
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Radial positive solutions for a nonpositone problem in an annulus
Electronic Journal of Differential Equations, 2014 The main purpose of this article is to prove the existence of radial positive solutions for a nonpositone problem in an annulus when the nonlinearity is superlinear and has more than one zero.
Said Hakimi, Abderrahim Zertiti
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Nonexistence of radial positive solutions for a nonpositone problem [PDF]
Electronic Journal of Differential Equations, 2011 In this article we study the nonexistence of radial positive solutions for a nonpositone problem when the nonliearity is superlinear and has more than one zero.
Said Hakimi, Abderrahim Zertiti
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Positive solutions of elliptic nonpositone problems
Differential and Integral Equations, 1992 The authors give conditions for the existence or nonexistence of positive solutions of second order subcritical elliptic nonpositone problems. No assumption is made that the problems be radial nor that they possess a variational structure.
W. Allegretto +2 more
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Nonexistence of radial positive solutions for a nonpositone system in an annulus [PDF]
Electronic Journal of Differential Equations, 2011 In this article we study the nonexistence of radial positive solutions for a nonpositone system in an annulus by using energy analysis and comparison methods.
Said Hakimi
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Non-Negative Solutions for a Class of Radially Symmetric Non-Positone Problems [PDF]
Proceedings of the American Mathematical Society, 1989 We consider the existence of radially symmetric non-negative solutions for the boundary value problem \[
Alfonso Castro, R. Shivaji
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International Journal of Mathematics and Mathematical Sciences, Volume 31, Issue 12, Page 751-760, 2002., 2002 We consider the boundary value problem −u″(x) = λf(u(x)), x ∈ (0, 1); u′(0) = 0; u′(1) + αu(1) = 0, where α > 0, λ > 0 are parameters and f ∈ c2[0, ∞) such that f(0) < 0. In this paper, we study for the two cases ρ = 0 and ρ = θ (ρ is the value of the solution at x = 0 and θ is such that F(θ) = 0 where F(s)=∫0sf(t)dt) the relation between λ and the ...
G. A. Afrouzi, M. Khaleghy Moghaddam
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Communications on Pure and Applied Analysis, 2016 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Huang, Kuan-Ju +2 more
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On singular nonpositone semilinear elliptic problems
, 2008 We prove the existence of a large positive solution for the boundary value problems $$ \begin{alignat}{2} -\Delta u &=\lambda (-h(u)+g(x,u))&\quad& \text{in }\Omega , \\ u &=0 &\quad &\text{on }\partial \Omega , \end{alignat} $$ where $\Omega $ is a bounded domain in ${\mathbb R}^{N}$, $\lambda $ is a positive parameter, $g(x,\cdot)$ is sublinear at ...
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British Journal of Mathematics & Computer Science, 2013 In this paper, our main purpose is studying the nonexistence of radial positive solutions for the boundary-value problem: { −4p u = λf(u(x)), x ∈ Ω; u(x) = 0, x ∈ ∂Ω. where p > 1,λ > 0, Ω is an annulus in R (N > 2) i.e. Ω={x ∈ R |R < |x| < R}(0 < R < R), f is a continuous nonlinear function and satisfies f(0) < 0 (the nonpositone case), f also has more
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