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Multiple positive solutions for an unbounded Dirichlet boundary problem involving sign-changing weight

Published online by Cambridge University Press:  04 November 2009

Tsung-fang Wu
Affiliation:
Department of Applied Mathematics, National University of Kaohsiung, Kaohsiung 811, Taiwan, (tfwu@nuk.edu.tw)
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Abstract

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We study the multiplicity of positive solutions for the following semilinear elliptic equation:

where 1 < q < 2 < p < 2* (2* = 2N/(N − 2) if N ≥ 3, 2* = ∞ if N = 2), the parameters λ, μ ≥ 0, is an infinite strip in ℝN and Θ is a bounded domain in ℝN−1 We assume that fλ(x) = λf+(x) + f(x) and gμ(x) = a(x) + μb(x), where the functions f±, a and b satisfy suitable conditions.

Type
Research Article
Copyright
Copyright © Royal Society of Edinburgh 2009