On anisotropic singularities for semi-linear elliptic equations in R-2
On anisotropic singularities for semi-linear elliptic equations in R-2
复制标题
R-2 中半线性椭圆方程的各向异性奇点
DOI:
10.1016/j.jmaa.2017.02.045
复制
发表时间:
2017
影响因子:
1.3
通讯作者:
Chen Huyuan
中科院分区:
文献类型:
--
作者:
王英;Chen Huyuan
In this note, we study weak solutions of (1)− Δ u+ g (u)= 8 π∂ δ 0∂ x 2 in R 2,− Δ+ g u (x)→ 0 as| x|→+∞, where g (s)= 2 e s− 1 e s+ 1 is an odd, increasing and bounded function and∂ δ 0∂ x 2 is defined in the sense of distribution<∂ δ 0∂ x 2, ξ>=∂ ξ (0)∂ x 2 for ξ∈ C c 1 (R 2). We obtain that problem (1) admits a unique, x 2-odd weak solution, which has anisotropic singularity 4 x 2| x| 2 near the origin.