简介: <正> Inthispaper,wecompletelydeterminetheconnectivityofeveryinfinitecirculantdigraphsandprovethatalmostallinfinitecirculantdigraphsareinfinitelystronglyconnectedandthereforehavebothone-andtwo-wayinfiniteHamiltonianpaths. 正>
简介:在这份报纸,在范围的稳定的homotopy组的homotopy元素的一个新家庭由n2m5and3s代表了
简介: <正> TheSteinberggroupoveraringalonganarbitrarysetisdefined.Itsproperties,structure,andisomorphismtheoryarestudied. 正>
简介:Letλandμbesequencespacesandhaveboththesigned-weakglidinghumpproperty,(λ,μ)thealgebraoftheinfinitematrixoperatorswhichtransformλintoμ.Inthispaper,itisprovedthatifλandμareβ-spacesandλ^βand,μ^βhavealsothesigned-weakglidinghumpproperty,thenforanypolartopologyτ,((λ,μ),τ)isalwayssequentiallycompletelocallyconvextopologicalalgebra.
简介:AcontravariantbilinearpairingKoneveryM(ρ)×M(ρθ)isdeterminedanditisprovedthatM(ρ)isirreducibleifandonlyifKisleftnondegenerate,ItisalsoprovedthateverycyclicpointedmoduleisaquotientofsomeVerma-likepointedmodule;moreoverifitisirreduciblethenitisaquotientoftheVerma-likepointedmodulebytheleftkernelofsomebilinearpairingK.Incasethemassfunctionissymmetric,thereexistsabilinearformonM(ρ),Itisprovedthatunitarypointedmodulesareintegrable,Inaddition,acharacterizationofthemassfunctionsofKac-Moodyalgebrasisgiven,whichisageneralizationofthefinitedimensionalLiealgebrascase.
简介: <正> WeprovethatinanyinfinitedimensionalTeichmüllerspace,thereexistsaminimalgeodesiclyingintwodistinctgeodesicdisks. 正>
简介:Inthispaper,weconsiderFPUlatticeswithparticlesofunitmass.Thedynamicsofthesystemisdescribedbytheinfinitesystemofsecondorderdifferentialequationsqn=U′(qn+1-qn)-U′(qn-qn-1),n∈Z,whereqndenotesthedisplacementofthen-thlatticesiteandUisthepotentialofinteractionbetweentwoadjacentparticles.InspiredbypreviousworkduetoSzulkinandWeth(Groundstatesolutionsforsomeindefinitevariationalproblems,J.Funct.Anal.,257(2009),3802-3822),weinvestigatetheexistenceofsolitarygroundwaves,i.e.,nontrivialsolutionswithleastpossibleenergy.
简介:在一个磁场使击碎的磁电的身体变形在裂缝附近导致一个使不安的磁场。在在裂缝附近的这块使不安的地和压力之间的量的关系在开发基于磁力的非破坏性的测试技术的新一代是关键的。在这份报纸,使不安的磁场的分析表情由在一个弱外部磁场包含一个集中的裂缝的一个无限的铁磁性的有弹性的盘子的结构的变丑导致了被使用线性化的磁电的理论和Fourier变换方法获得。主要发现是使不安的磁场紧张与应用张力的压力成正比,并且被排水量坡度在磁电的固体的边界上统治。裂缝附近的使不安的磁场的紧张的正切的部件沿着越过它的二张脸严厉地颠倒它的方向的裂缝展出反对称的分布,当正常部件在裂缝尖端与单个点沿着裂缝显示出对称的分布时。
简介:Inthisnote,apositiveanswerforaquestionposedbyS.Batesin1992isgiven,i.e.thereexistsaC^∞rank-1mapf:I^2→R^1suchthatf(A)hasnonemptyinteriorforsomesubsetA(∪→)I^2ofcriticalpointswithfiniteHausdorffdimension.ItissaytheMorsecriticalitytheoremcannotbegeneralizedtoinfinite-dimensionalspaces.
简介:Fortheinfinitedelaydifferenceequationsofthegeneralform,twonewuniformasymptoticstabilitycriteriaareestablishedintermsofthediscreteLiapunovfunctionals.
简介:Anon-autonomousLogistictypeequationwithinfinitedelayisinvestigated.Forgeneralnonau-tonomouscase,sufficientconditionswhichguaranteetheuniformpersistenceandgloballyattractivityofthesystemareobtained;Foralmostperiodiccase,bymeansofasuitableLyapunovfunctional,sufficientconditionsarederivedfortheexistenceanduniquenessofalmostperiodicsolutionofthesystem.Somenewresultsareobtained.