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Existence theorems for a semilinear elliptic boundary value problem

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Marano S.

Annales Polonici Mathematici

1994-1995

tom 60

nr 1

57-67

Let Ω be a bounded domain in $ℝ^n$, n ≥ 3, with a smooth boundary ∂Ω; let L be a linear, second order, elliptic operator; let f and g be two real-valued functions defined on Ω × ℝ such that f(x,z) ≤ g(x,z) for almost every x ∈ Ω and every z ∈ ℝ. In this paper we prove that, under suitable assumptions, the problem { f(x,u) ≤ Lu ≤ g(x,u) in Ω, u = 0 on ∂Ω, has at least one strong solution $u ∈ W^{2,p}(Ω) ∩ W^{1,p}_0(Ω). Next, we present some remarkable special cases.

Ograniczanie wyników

1 Annales Polonici Mathematici

1 Marano S.

1 1994

Wyniki wyszukiwania

Existence theorems for a semilinear elliptic boundary value problem