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Sharp existence and classification results for nonlinear elliptic equations in RN∖{0} with Hardy potential
Journal of Differential Equations ( IF 2.4 ) Pub Date : 2021-05-14 , DOI: 10.1016/j.jde.2021.05.005
Florica C. Cîrstea , Maria Fărcăşeanu

For N3, by the seminal paper of Brezis and Véron (1980/81), no positive solutions of Δu+uq=0 in RN{0} exist if qN/(N2). In turn, for 1<q<N/(N2) the existence and profiles near zero of all positive C1(RN{0}) solutions are given by Friedman and Véron (1986).

In this paper, for every q>1 and θR, we prove that the elliptic problem () Δuλ|x|2u+|x|θuq=0 in RN{0} with u>0 has a C1(RN{0}) solution if and only if λ>λ, where λ=Θ(N2Θ) with Θ=(θ+2)/(q1). We show that (a) if λ>(N2)2/4, then U0(x)=(λλ)1/(q1)|x|Θ is the only solution of () and (b) if λ<λ(N2)2/4, then all solutions of () are radially symmetric and their total set is U0{Uγ,q,λ:γ(0,)}. We give the precise behavior of Uγ,q,λ near zero and at infinity, distinguishing between 1<q<qN,θ and q>max{qN,θ,1}, where qN,θ=(N+2θ+2)/(N2).

In addition, we answer open questions arising from the works of Cîrstea (2014) and Wei–Du (2017) for θ2 by settling the existence and sharp profiles near zero of all positive solutions of () in Ω{0}, subject to u|Ω=0, where Ω is a smooth bounded domain containing zero.



中文翻译:

非线性椭圆型方程的尖锐存在和分类结果。 [Rñ{0} 具有哈迪潜力

为了 ñ3,由布雷齐斯(Brezis)和韦隆(Véron)(1980/81)开创性的论文, -Δü+üq=0[Rñ{0} 存在,如果 qñ/ñ-2个。反过来,对于1个<q<ñ/ñ-2个 所有正数的存在和分布接近零 C1个[Rñ{0} 解决方案由Friedman和Véron(1986)提供。

在本文中,对于每个 q>1个θ[R,我们证明了椭圆问题 -Δü-λ|X|-2个ü+|X|θüq=0[Rñ{0}ü>0 有一个 C1个[Rñ{0} 解决方案,当且仅当 λ>λ, 在哪里 λ=Θñ-2个-ΘΘ=θ+2个/q-1个。我们证明(a)如果λ>ñ-2个2个/4, 然后 ü0X=λ-λ1个/q-1个|X|-Θ 是唯一的解决方案 和(b)如果 λ<λñ-2个2个/4,则所有的解决方案 是径向对称的,它们的总集合是 ü0{üγqλγ0}。我们给出的精确行为üγqλ 接近零且无穷大,以区分 1个<q<qñθq>最大限度{qñθ1个}, 在哪里 qñθ=ñ+2个θ+2个/ñ-2个

此外,我们还将回答Cîrstea(2014)和Wei–Du(2017)的作品所产生的开放性问题。 θ-2个 通过解决的所有正解的存在和接近零的尖锐轮廓 Ω{0},受 ü|Ω=0,其中Ω是包含零的平滑有界域。

更新日期:2021-05-15
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