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The multiplicity of solutions and geometry of a nonlinear elliptic equation

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Choi Q.-H., Chun S., Jung T.

Studia Mathematica

1996

tom 120

nr 3

259-270

Let Ω be a bounded domain in $ℝ^n$ with smooth boundary ∂Ω and let L denote a second order linear elliptic differential operator and a mapping from $L^2(Ω)$ into itself with compact inverse, with eigenvalues $-λ_{i}$, each repeated according to its multiplicity, 0 < λ_{1} < λ_{2} < λ_{3} ≤ ... ≤ λ_{i} ≤ ... → ∞. We consider a semilinear elliptic Dirichlet problem $Lu+bu^+-au^-=f(x)$ in Ω, u=0 on ∂ Ω. We assume that $a < λ_{1}$, $λ_{2} < b < λ_{3}$ and f is generated by $ϕ_{1}$ and $ϕ_{2}$. We show a relation between the multiplicity of solutions and source terms in the equation.

Ograniczanie wyników

1 Studia Mathematica

1 Choi Q.-H.

1 Chun S.

1 Jung T.

1 1996

Wyniki wyszukiwania

The multiplicity of solutions and geometry of a nonlinear elliptic equation