On finding solutions of a Kirchhoff type problem

Author:

Huang Yisheng,Liu Zeng,Wu Yuanze

Abstract

Consider the Kirchhoff type problem { ( a + b B R | u | 2 d x ) Δ u a m p ; = λ u q 1 + μ u p 1 , a m p ; a m p ; in  B R , u a m p ; > 0 , a m p ; a m p ; in  B R , u a m p ; = 0 , a m p ; a m p ; on  B R , \begin{equation}\tag {$\mathcal {P}$} \left \{ \begin {aligned} -\bigg (a+b\int _{\mathbb {B}_R}|\nabla u|^2dx\bigg )\Delta u&= \lambda u^{q-1} + \mu u^{p-1}, &&\text {in $\mathbb {B}_R$}, \\ u&>0, &&\text {in $\mathbb {B}_R$},\\ u&=0, &&\text {on $\partial \mathbb {B}_R$}, \end{aligned} \right . \end{equation} where B R R N ( N 3 ) \mathbb {B}_R\subset \mathbb {R}^N(N\geq 3) is a ball, 2 q > p 2 := 2 N N 2 2\leq q>p\leq 2^*:=\frac {2N}{N-2} and a a , b b , λ \lambda , μ \mu are positive parameters. By introducing some new ideas and using the well-known results of the problem ( P ) (\mathcal {P}) in the cases of a = μ = 1 a=\mu =1 and b = 0 b=0 , we obtain some special kinds of solutions to ( P ) (\mathcal {P}) for all N 3 N\geq 3 with precise expressions on the parameters a a , b b , λ \lambda , μ \mu , which reveals some new phenomenons of the solutions to the problem ( P ) (\mathcal {P}) . It is also worth pointing out that it seems to be the first time that the solutions of ( P ) (\mathcal {P}) can be expressed precisely on the parameters a a , b b , λ \lambda , μ \mu , and our results in dimension four also give a partial answer to Naimen’s open problems [J. Differential Equations 257 (2014), 1168–1193]. Furthermore, our results in dimension four seem to be almost “optimal”.

Publisher

American Mathematical Society (AMS)

Subject

Applied Mathematics,General Mathematics

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