張仕玉, 魏公明
(上海理工大學(xué)理學(xué)院,上海 200093)
一類半線性橢圓型方程解的可去奇點問題
張仕玉, 魏公明
(上海理工大學(xué)理學(xué)院,上海 200093)
通過建立不同的實驗函數(shù)以及所需要的截斷函數(shù),并運用橢圓型方程的正則性理論,研究了一類半線性橢圓型方程解的可去奇點問題.得到其半線性橢圓型方程分布意義下的解,與一個定義在RN中開子集上的局部H?lder連續(xù)函數(shù)幾乎處處相等的結(jié)論.
橢圓型方程;奇點;截斷函數(shù)
在奇點附近解的漸進行為,進而又解決了方程
主要結(jié)果:
綜上,根據(jù)擬線性橢圓型方程的正則性理論[9],可知存在一個定義在Ω上局部H?lder連續(xù)的函數(shù)u′,使得u與u′在Ω′上幾乎處處相等,即完成證明.
[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] C?rstea 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] C?rstea 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
張仕玉(1987-),女,碩士研究生.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