一类半线性椭圆型方程解的可去奇点问题

2013-06-23 16:22:23张仕玉魏公明
上海理工大学学报 2013年1期
关键词:公明椭圆型上海理工大学

张仕玉, 魏公明

(上海理工大学理学院,上海 200093)

一类半线性椭圆型方程解的可去奇点问题

张仕玉, 魏公明

(上海理工大学理学院,上海 200093)

通过建立不同的实验函数以及所需要的截断函数,并运用椭圆型方程的正则性理论,研究了一类半线性椭圆型方程解的可去奇点问题.得到其半线性椭圆型方程分布意义下的解,与一个定义在RN中开子集上的局部Hölder连续函数几乎处处相等的结论.

椭圆型方程;奇点;截断函数

1 问题的提出

在奇点附近解的渐进行为,进而又解决了方程

主要结果:

1 重要命题和引理

3 定理1的证明

综上,根据拟线性椭圆型方程的正则性理论[9],可知存在一个定义在Ω上局部Hölder连续的函数u′,使得u与u′在Ω′上几乎处处相等,即完成证明.

[1] Brézis H,Véron L.Removable singularities of some nonlinear elliptic equations[J].Archive for Rational Mechanics and Analysis,1980(75):1-6.

[2] Vázquez J L,Véron L.Removable singularities of some strongly nonlinear elliptic equations[J]. Manscripta Math,1980(33):129-144.

[3] Cîrstea F C,Du Y H.Asymptotic behavior of solutions of semilinear elliptic equations near an isolated singularity[J].Journal of Functional Analysis,2007(250):317-346.

[4] Cîrstea F C,Du Y H.Isolated singularities for weighted qua-silinear elliptic equations[J].Journal of Functional Analysis,2010(259):174-202.

[5] Mamedov F I,Harman A.On the removablity of isolated singular points for degenerating nonlinear elliptic equations[J].Nonlinear Analysis,2009(71):6290-6298.

[6] Bidaut M F,Ponce A C,Véron L.Isolated boundary singularities of semilinear elliptic equations[J]. Calculus of Variations and Partial Differential Equations,2011(40):183-221.

[7] Brézis H,Nirenberg L.Removable singularities for nonlinear elliptic equations[J].Topological Methods in Nonlinear Analysis,1997(9):201-219.

[8] Del P M,Musso M,Pacard F.Boundary singularities for weak solutions of semilinear elliptic problems[J]. Journal of Functional Analysis,2007(253):241-272.

[9] Serrin J.Local behaviour of solutions of quasilinear equations[J].Acta Mathematica,1964(111):247-302.

Removable Singularities of the Solution of A Class of Semilinear Elliptic Equations

ZHANGShiyu, WEIGongming
(College of Science,University of Shanghai for Science and Technology,shanghai 200093,China)

The removable singularities of the solution of a class of semilinear elliptic equations were dealt with.The main result is that the weak solution of the equation coincides with a continuous function of the open subset of RNalmost everywhere.

elliptic equation;singularity;truncation function

O 175.2;N 94

A

1007-6735(2013)01-0037-04

0

2011-12-22

张仕玉(1987-),女,硕士研究生.研究方向:偏微分方程.E-mail:zhangshiyu04@126.com

魏公明(1974-),男,副教授.研究方向:偏微分方程.E-mail:gmweixy@163.com

猜你喜欢
公明椭圆型上海理工大学
一类带临界指数增长的椭圆型方程组两个正解的存在性
《上海理工大学学报》征稿简则
上海理工大学
POSITIVE SOLUTIONS AND INFINITELY MANY SOLUTIONS FOR A WEAKLY COUPLED SYSTEM∗
公明宣善学
《上海理工大学学报(社会科学版)》征稿简则
《上海理工大学学报(社会科学版)》征稿简则
《上海理工大学学报(社会科学版)》征稿简则
《上海理工大学学报(社会科学版)》征稿简则
巴登街