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1.
Boundary Extension of μ(z)—homeomorphism   总被引:1,自引:0,他引:1  
郑学良 《数学季刊》1999,14(2):94-96
§1. IntroductionItiswellknownthattheBeltramiequationfz=μ(z)fz(1.1)hasauniquehomeomorphicsolutionundernormalizationconditionwhenyμ(z)y∞<1.Thissolutionishabituallycalledaquasiconformalmappingwithcomplexdilatationμ(z)[1].Withoutthisessentialrestriction…  相似文献   

2.
§1. IntroductionIfD1,D2aretwosmoothboundedpseudoconvexdomainsinCn,D1satisfiestheconditionR(see[1]),itiswellknownthatanybiholomorphicmappingf:D1→D2extendssmoothlytotheboundary.Thisresulthasbeengeneralizedtothecasesofproperholomorphicmappings([2]).Inth…  相似文献   

3.
§1. IntroductionZakharov-Kuznestovequationut+uxxx+uxyy+uux=0(1.1)hasverysoundphysicalbackgroundanditdescribestheevolutionofionic.Soundwaveinionicbodysuchasmagnetismwhichisunderstrongmagneticfieldandhasthecharacteristicsofsmallamplitudeandweakdispersi…  相似文献   

4.
§1.IntroductionConsidera11tensorfieldIonasmoothmanifoldM.Thenaturalgeneralizationofthecomplexstructureandparacomplexstructu...  相似文献   

5.
§1. IntroductionThetopologicalclassificationandenumerationproblemongraphlikemanifoldswasraisedin[1].Severalresultswithrespecttospecialgraphlikemanifoldsweregivenin[1~8].Weshallstudythisprobleminaviewpointofpurecombinatorics.Infact,anewtypeofenumera-t…  相似文献   

6.
§1. IntroductionWeknownthatisnotpossiblethattheLagrangeinterpolationpolynomialsconvergeuni-formlytof(x)forallcontinuousfunctionsf(x)on[-1,1].Asaresult,onecanusevariouswaystochangetheLagrangeinterpolationpolynomialsuchthattheyuniformlyconvergetoallcon…  相似文献   

7.
The Qualitative Analysis of a Class Autocatalytic Reactions Model   总被引:1,自引:0,他引:1  
§1. IntroductionIn1984,thearticle[1]studiedthefollowingautocatalyticreactionsmodeldadt=-k1ab2+kf(a0-a)dbdt=k1ab2-k2b-kf(b-b0)(1)wherek1,k2,kf,a0,b0areallpositivearbitraryconstants.Thearticlepointsouttheremaybeninephase-portraitsinsystem(1).Ithasnotgi…  相似文献   

8.
§1. IntroductionRecently,thesemilinearellipticequations△u+f(u)=0(1.1)u(x)→0as|x|→∞(1.2)inRnwereconsideredwidely(see[1]-[7]).Inthenicepapers[1]and[2],itwasprovedthatanypositivesolutionof(1.1)mustberadialincasef(u)∈C1+δ(δ>0).Therefore,anypositivesoluti…  相似文献   

9.
§1. IntroductionThroughoutthispaper,allringsarecommutativeringswithidentityelements,allgroupsarefinitelygeneratedabeliangroups.Allmodulesareunitaryandthenotationcoincideswiththatin[1]and[5].WealsosetΦ={1}.AfinitelygeneratedprojectiveRG-modulePcanbeex…  相似文献   

10.
§1. TheEquivalenceofLyapunovsRangeoftheInterconnectedStabilizationNew,letusconsiderthelinearconstantinterconnectedcontrolsystemxi(t)=∑nj=1aijxj(t)+∑mj=1bijuj(t)+∑N1r=1∑nj=1a(r)1ije(r)1ijxj(t)          +∑N2s=1∑nj=1a(s)2ije(s)2ijxj(t-r(s)1ij)+∑N2d=1∑…  相似文献   

11.
§1.IntroductionTheconceptofreducibleHeegaardsplitingswasfirstdevelopedbyHaken[1].Itsrela-tiontothecorresponding3-manifoldscon...  相似文献   

12.
王书彬  吕延华 《数学季刊》1998,13(3):102-110
§1. IntroductionIn[1,2],AronsonandWeinbergerhavestudiedsystematiclythescalarnonlineardiffu-sionequationinonespacevariableut=uxx+φ(u),(1.1)whereu=u(x,t)andφ(u)isanonlinearfunction.Equation(1.1)arisesinseveralapplica-tions;See[1,2]and[3]forinformationa…  相似文献   

13.
A New Method for Computing Reproducing Kernels   总被引:3,自引:0,他引:3  
§1.IntroductionAsystematicresearchtothetheoryofreproducingkernelwasfirstmadebyAronszajnandBergman[1].Theygaveasuficientandnec...  相似文献   

14.
赵晓霞  林萍 《数学季刊》1999,14(1):88-101
Inthepaper[1],YinWeipingin1981obtainedGammafunctionsandSiegelintegralsonnonselfdualconesVIIm1,…,ms1,sandVIIm1,…,ms1,s,  Inthispaper,wewilldefineGammafunctionsandSiegelintegralsonnonselfdualconesVIIm1,…,ms13,sandVIIm1,…,ms13,s.ThenobtainCauchy-Szego…  相似文献   

15.
袁俭  徐扬 《数学季刊》1998,13(4):35-40
§1. IntroductionIn1995,Mr.XuYang,inhisdoctoraldissertation[1],firstintroducedadoublelattice-or-deredalgebraicstructurecalledl-moduleanddiscusseditsalgebraicandanalyticalproperties,bywhichhedealtwiththeproblemoflattice-valuedgameandsetuptheelementalt…  相似文献   

16.
§1. IntroductionLetMbeann-dimensionalconformallyflatmanifoldwithconstantscalarcurvatureρ(n≥3).WhentheRiccicurvatureSofMisofboundedbelowandySy2<ρ2/(n-1),Gold-bergprovedthatMisofconstantcurvature[1].WhenMisacompactmanifoldwithpositiveRiccicurvature,WuB…  相似文献   

17.
1IntroductionThepurposeofthispaperistoextendsomeoscilationresultsofthepapers[1,2]totheneutralhyperbolicdiferentialequationoft...  相似文献   

18.
Hopf Bifurcation Analysis of Some Modified Chemostat Models   总被引:3,自引:0,他引:3  
§1.IntroductionNumerousnicepapers(see[1]-[12])havebeendevotedtothestudiesofthechemo-statsincelate60's,whichisconsideredasanim...  相似文献   

19.
周振荣 《数学季刊》1999,14(2):28-32
§1. IntroductionandMainResultLetMbeanorientedclosedhypersurfaceofM,an(n+1)-dimensionalorientedclosedRiemannmainfold(closedmeanscompactandwithoutboundary).DenotethefirsteigenvalueoftheLaplacianforMbyλ1.SupposethattheRiccicurvatureofM,Ric(M),isbound…  相似文献   

20.
Passmanintroducedthenotationsofexcellentextensionin[1].LetRbesubringofS,RandShavesameunit.SiscalledexcellentextensionofRif:(A)S=∑ni=1aiRsuchthat{a1,…,an}S,a1=1,Rai=aiR,i=1~nandSisfreewithbasie{a1,…,an}asbotharightandleftR-module.(B)SisR-projective:t…  相似文献   

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