A Remark on the Existence of Entire Solutions of a Singular Semilinear Elliptic Problem

A Remark on the Existence of Entire Solutions of a Singular Semilinear Elliptic Problem
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DOI:
10.1006/jmaa.1997.5655
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发表时间:
1997-11
影响因子:
1.3
通讯作者:
Zhijun Zhang
Zhijun Zhang
中科院分区:
数学3区
文献类型:
--
作者:
Zhijun Zhang

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证明了奇异半线性椭圆方程−Δu = p(x)g(u),0 ≤ p(x),x ∈ Rn,2 ≤ n,lims → 0+g(s)= +∞,且g ∈ C1((0,∞),(0,∞))在(0,∞)中严格递减,当<$∞0 t <$(t)dt < ∞时,存在唯一的C2 + αloc(Rn)正解,且在∞附近衰减到零,其中<$0(t)= @imax@i| X| = tg(x)。
It is proved that the singular semilinear elliptic equation −Δu = p(x)g(u), 0 ≤ p(x),x ∈ Rn, 2 ≤ n, lims → 0+g(s) = +∞, andg ∈ C1((0, ∞), (0, ∞)) which is strictly decreasing in (0, ∞), has a unique positiveC2 + αloc(Rn) solution that decays to zero near ∞ provided ∫∞0 tϕ(t)dt < ∞, where ϕ(t) = @imax@i|x| = tg(x).