Blow-up for sign-changing solutions of the critical heat equation in domains with a small hole

Blow-up for sign-changing solutions of the critical heat equation in domains with a small hole
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小孔域中临界热方程变号解的放大

DOI:
10.1142/s0219199715500170
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发表时间:
2014
影响因子:
1.6
通讯作者:
A. Pistoia
A. Pistoia
中科院分区:
数学2区
文献类型:
--
作者:
I. Ianni;M. Musso;A. Pistoia

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我们考虑临界热方程Vt−Δv=|v|4 N−2vΩϵ×(0,+∞),v=0∂Ωϵ×(0,+∞),(CH)v=v0 inΩϵ×{t=0}inΩϵ:=Ω∖Bϵ(X0),其中Ω是ℝN中的光滑有界域,N≥3,Bϵ(X0)是以X0∈Ω为中心,半径ϵ>0小的球状的Non。证明了如果ϵ>0足够小,则存在(CH)的变号平稳解ϕϵ,使得(CH)的初值为V0=λϕϵ的解在|λ−1|>0足够小时爆破。特别地,这表明(CH)的解是全局且有界的初始条件集不是星形的。
We consider the critical heat equation vt − Δv = |v| 4 N−2vΩϵ × (0, +∞),v = 0∂Ωϵ × (0, +∞),(CH)v = v0in Ωϵ ×{t = 0} in Ωϵ := Ω∖Bϵ(x0) where Ω is a smooth bounded domain in ℝN,N ≥ 3 and Bϵ(x0) is a ball of ℝN of center x0 ∈ Ω and radius ϵ > 0 small. We show that if ϵ > 0 is small enough, then there exists a sign-changing stationary solution ϕϵ of (CH) such that the solution of (CH) with initial value v0 = λϕϵ blows up if |λ − 1| > 0 is sufficiently small. This shows, in particular, that the set of the initial conditions for which the solution of (CH) is global and bounded is not star-shaped.
DOI: --
发表时间: 2007
期刊:
影响因子: --
作者:
Y. Naito;T. Senba;内藤 雄基
通讯作者: 内藤 雄基