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椭圆方程奇异非线性问题与奇异边值问题正解的存在性
The Existence of Postitive Solutions for Elliptic Equation with Singular Nonlinearity and Singular Boundary Value Problem
【摘要】 用上下解方法得到了 Rn 中光滑有界区域上f ( x , u , Du) 在u = 0 处具奇性的椭圆方程 Δu+ f ( x , u , Du) = 0 零边值问题正解的存在性并由此直接获得了“超布朗运动” 中所需的椭圆方程奇异边值问题正确的存在性.
【Abstract】 In this paper,by the method of subsolutions and supersolutions,for smooth boundary domain Ω of R\+n ,the existence of positive solutions for singular nonlinear elliptic boundary value problem Δu+f(x,u,Du)=0,u|\-\{Ω\}=0 ,has been obtained.By the transformation u=v\+\{-p\}(p>2/(q-1)) ,the existence of positive solutions for Δv=Cv\+q(C>0,q>1),v|\-\{Ω\}=+∞ ,has also been obtained.
【关键词】 椭圆方程;
奇异非线性;
奇异边值问题;
正解的存在性;
【Key words】 elliptic equation; singular nonlinearity; singular boundary value; existence of positive solution;
【Key words】 elliptic equation; singular nonlinearity; singular boundary value; existence of positive solution;
- 【文献出处】 重庆交通学院学报 ,JOURNAL OF CHONGQING JIAOTONG INSTITUTE , 编辑部邮箱 ,1999年03期
- 【分类号】O175.25
- 【下载频次】19