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    一類半線性橢圓型方程解的可去奇點(diǎn)問題

    2013-06-23 16:22:23張仕玉魏公明
    關(guān)鍵詞:公明橢圓型上海理工大學(xué)

    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(diǎn)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(shí)驗(yàn)函數(shù)以及所需要的截?cái)嗪瘮?shù),并運(yùn)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(diǎn)問題.得到其半線性橢圓型方程分布意義下的解,與一個(gè)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(diǎn);截?cái)嗪瘮?shù)

    1 問題的提出

    在奇點(diǎn)附近解的漸進(jìn)行為,進(jìn)而又解決了方程

    主要結(jié)果:

    1 重要命題和引理

    3 定理1的證明

    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(gè)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

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