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MULTIPLE POSITIVE SOLUTIONS OF INHOMOGENEOUS SEMILINEAR ELLIPTIC EQUATIONS IN UNBOUNDED DOMAINS IN R^2 被引量:1
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作者 曹道珉 《Acta Mathematica Scientia》 SCIE CSCD 1994年第3期297-312,共16页
In this paper,we consider the existence of multiple positive solutions of the following inhomepeneous semilinear elliptic equation where λ> 0.ed and ω is a bounded smooth open set in R2,h(x)∈ L 2(Ω),h(x) 0.f(t)... In this paper,we consider the existence of multiple positive solutions of the following inhomepeneous semilinear elliptic equation where λ> 0.ed and ω is a bounded smooth open set in R2,h(x)∈ L 2(Ω),h(x) 0.f(t)∈ C1([0.+∝)) satisfies f(0) =f'(0)=0.fn(t) exists and fn(t)> 0.0<f(t) <Cexp(at) for some constants C,α> 0.0 <u <2 and t∈(0.+c),f(t)<0tf'(t) for someθ ∈(0,1). By looking for the local miaimum of the corresponding energy functional we tain the first minimum positive solution and by applying mountain pass lemma around the ndboum positive solution we prove the following result: 展开更多
关键词 has.at least two positive solutions if λ∈(0 λ).whereλ>0 is someconstant and(P)λ hasno positive solution if λ>λ
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Multiple positive periodic solutions for a generalized delayed population model with an exploited term 被引量:1
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作者 Zheng-qiu ZHANG Zhi-cheng WANG 《Science China Mathematics》 SCIE 2007年第1期27-34,共8页
In this paper, the existence of two positive periodic solutions for a generalized delayed population model with an exploited term is established by using the continuation theorem of the coincidence degree theory.
关键词 two positive periodic solutions generalized delayed population model continuation theorem of coincidence degree theory exploited term 34K13
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