Uniqueness of nodal radial solutions superlinear elliptic equations in a ball

Uniqueness of nodal radial solutions superlinear elliptic equations in a ball
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DOI:
10.1017/s0308210507000431
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发表时间:
2008-11
期刊:
Proceedings of the Royal Society of Edinburgh: Section A Mathematics
影响因子:
--
通讯作者:
Satoshi Tanaka
Satoshi Tanaka
中科院分区:
其他
文献类型:
--
作者:
Satoshi Tanaka

文献摘要

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考虑Dirichlet问题,其中B = {x ∈ N:|X| 1,K ∈ C2[0,1]且K(r)> 0,其中0 ≤ r ≤ 1。本文给出了方程(*)的径向解唯一的一个充分条件,其中k ∈ φ,它恰好有k − 1个结点。还证明了存在K ∈ C∞[0,1]使得(*)至少有三个具有恰好k − 1个节点的径向解,当1 < p <(N + 2)/(N − 2)时.
The Dirichlet problem is considered, where B = {x ∈ ℝN : |x| 1, K ∈ C2[0, 1] and K(r) > 0 for 0 ≤ r ≤ 1. A sufficient condition is derived for the uniqueness of radial solutions of (*) possessing exactly k − 1 nodes, where k ∈ ℕ. It is also shown that there exists K ∈ C∞[0, 1] such that (*) has at least three radial solutions possessing exactly k − 1 nodes, in the case 1 < p < (N + 2)/(N − 2).