Results 1 to 10 of about 49 (39)
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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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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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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Positive solutions of nonpositone sublinear elliptic problems
Opuscula MathematicaConsider the problem \(-\Delta u=\lambda f(\cdot, u) \) in \(\Omega\), \(u=0\) on \(\partial\Omega\), \(u\gt 0\) in \(\Omega\), where \(\Omega\) is a bounded domain in \(\mathbb{R}^{n}\) with \(C^{2}\) boundary when \(n\geq2\), \(\lambda\gt 0\), and where \(f\in C (\overline{\Omega}\times[0,\infty)) \) satisfies \(\lim_{s\rightarrow\infty}s^{-p}f(\cdot,
Tomas Godoy
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Positive solutions for a class of nonpositone problems with concave nonlinearities
Proceedings of the Royal Society of Edinburgh: Section A Mathematics, 1994 We consider the bifurcation of positive solutions of the two-point boundary value problemwhere λ> 0 is a real bifurcation parameter, and f ∊ C2 satisfies (fl) f(0) < 0, (f2) f′(s) > 0 for s > 0, (f3) f″(s) < 0 for s > 0 and (f4) limS→+∞f(s) = M where 0 < M ≦+∞. This problem has been studied by Casto and Shivaji under two additional
Shin-Hwa Wang
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Nonexistence of radial positive solutions for a nonpositone problem
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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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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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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CLASSIFICATION OF BIFURCATION DIAGRAMS OF A P -LAPLACIAN NONPOSITONE PROBLEM [PDF]
, 2020 . We study the bifurcation diagrams of positive solutions of the pLaplacian Dirichlet problem , and λ > 0 is a bifurcation parameter. Under certain hypotheses on functions g and h, we give a complete classification of bifurcation diagrams.
Shin-Hwa Wang +2 more
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