Acta mathematica scientia,Series A ›› 2002, Vol. 22 ›› Issue (2): 150-156.
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LI Jun-Feng, LIU Wei-An, LU Gang
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国家自然科学基金资助项目
Abstract:
该文研究了如下柯西问题狌狋=狌狓狓+ (狋+1)-σ/2狘狓狘σ狘狌狘狆-1狘狌狘, 狓∈犚,狋∈犚+ ,狌(狓,0)=狌0(狓), 狓∈犚{ .其中参数σ≥0,狌0(狓)在犚上犽次变号,满足某种速降条件.证明了:如果max{σ,1}<狆≤1+2犽+1,那么所有非零解在有限时间内爆破;如果狆>max{σ,1+2犽+1}则存在一个非零全局解.
Key words: Fujita问题;Fujita临界指标;爆破;可变号解
CLC Number:
LI Jun-Feng, LIU Wei-An, LU Gang. 半线性抛物方程可变号解的全局存在和爆破[J].Acta mathematica scientia,Series A, 2002, 22(2): 150-156.
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[l] H Fujita.OntheblowingupofsolutionsoftheCauchyproblemfor狌狋=Δ狌+狌1+α .JFacSciUnivTokyoSectIAMath,1966,18:109-124 [2] LevineH A.Theroleofcriticalexponentinblowuptheorems.SIAM Review,1990,32:262-288 [3] QiYuanwei.Thecriticalexponentofparabolicequationsandblowupin.ProcRoySocEginb,1998,128(A):123-136 [4] MizoguchiN,YanagidaE.Criticalexponentfortheblowupofsolutionswithsignchangesinasemilinearparabolicequation.MathAnn,1997,307:663-675 [5] MizoguchiN,YanagidaE.CriticalexponentfortheblowupofsolutionswithsignchangesinasemilinearparabolicequationII.JDiffEqu,1998,145:295-331 [6] MizoguchiN,YanagidaE.Blowupofsolutionswithsignchangesforadiffusionequation.J Math AnalAppl,1996,204:283-290 [7] AngenentS.Thezerosetofasolutionofaparabolicequation.JReineAngew Math,1988,390:79-96 [8] Chen M,HaleJK.Structuralstabilityfortimeperiodiconedimensionalparabolicequations.JDiffEqu,1992,96:355-418 [9] EscobedoM,KavianO.Variationalproblemsrelatedtoselfsimilarsolutionsofheatequation.NonlAnal,1987,11:1103-1133 [10] FriedmanA.Partialdifferentialequationsofparabolictype.PrenticeHallInc,1964 [11] ChiM Y,XuChaojiang,WangWeike.Introductiontomodernpartialdifferentialequations(inChinese).Wuhan:WuhanUnivPress,1994 [12] AdanasR A.SobolevSpace.N Y:AcadPress,1975 [13] TemanR.Infinitedimensionaldynamicalsystemsinmechanicandphysics.Berlin:SpringerVerlag,1980
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