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57 个结果
  • 简介:WeconstructaclassofintegrablegeneralizationofTodamechanicswithlong-rangeinteractions.ThesesystemsareassociatedwiththeloopalgebrasL(Cr)andL(Dr)inthesensethattheirLaxmatricescanberealizedintermsofthec=0representationsoftheaffineLiealgebrasCr(1)andDr(1)andtheinteractionspatterninvolvedbearsthetypicalcharactersofthecorrespondingrootsystems.WepresenttheequationsofmotionandtheHamiltonianstructure.Thesegeneralizedsystemscanbeidentifiedunambiguouslybyspecifyingtheunderlyingloopalgebratogetherwithanorderedpairofintegers(n,m).Itturnsoutthatdifferentsystemsassociatedwiththesameunderlyingloopalgebrabutwithdifferentpairsofintegers(n1,m1)and(n2,m2)withn2<n1andm2<m1canberelatedbyanestedHamiltonianreductionprocedure.Forallnontrivialgeneralizations,theextracoordinatesbesidesthestandardTodavariablesarePoissonnon-commute,andwheneithernorm≥3,thePoissonstructurefortheextracoordinatevariablesbecomessomeLiealgebra(i.e.theextravariablesappearlinearlyontheright-handsideofthePoissonbrackets).Inthequantumcase,suchgeneralizationswillbecomesystemswithnoncommutativevariableswithoutspoilingtheintegrability.

  • 标签: 广义Toda力学 多体系统 泊松括号 非线性偏微分方程
  • 简介:在这篇论文,我们在与下列PexiderizedJensen功能的方程联系的quasi-Banach代数学证明同形的概括Hyers-Ulam稳定性这被用于调查在quasi-Banach代数学之间的同形。概括Hyers-Ulam稳定性的概念从Rassia出现在他的纸的稳定性定理发源:在在Banach空格的线性印射的稳定性上,Proc。Amer。数学。Soc,72,297300(1978)。

  • 标签: BANACH代数 函数方程 代数同态 稳定性定理 Banach空间 柯西
  • 简介:MakinguseofWrightoperatorweintroduceanewclassofcomplex-valuedharmonicfunctionswithrespecttosymmetricpointswhichareorientationpreserving,univalentandstarlike.Weobtaincoefficientconditions,extremepoints,distortionbounds,andconvexcombination.

  • 标签: 对称点 超几何函数 星象函数 赖特 谐波 广义
  • 简介:在这篇论文,我们在精确大偏差上获得结果因为非鈥搑andom和随机与普通dominatedly变化的尾巴分发功能否定地联系的nonnegative随机变量加。我们发现在某些条件下面,有不同集中的数字的三精确大鈥揹eviation可能性等价于对方。而且,我们与某些否定地依赖的出现为否定地联系的nonnegative随机变量的和调查精确大偏差。获得的结果扩大并且改善Ng,唐,Yan和杨的相应结果(J。Appl。Prob,41,93鈥?07,2004)。否定地联系的关键词-dominatedly变化的尾巴-精确大偏差先生(2000)题目分类60F10-60F05-60G50研究由中国(号码10271087)的国家科学基金支持了

  • 标签: 否定联合 精确偏差 分布函数 确定条件 数学分析
  • 简介:在这篇文章,我们介绍paranormed顺序空格(f,,m,p),c0(f,,m,p)并且吗?(f,,m,p),与联系了更多样地定序=(k),由模量功能f定义。我们学习他们象坚硬一样的不同性质,symmetricity,完全性等等并且证明某包括结果。

  • 标签: 空间序列 相关序列 广义差分 定义 函数 模乘
  • 简介:一新(2+1)维的格子方程被介绍在联合Toda格子和相对论的Toda格子(TL-RTL)的层次在开始的二个成员之上基于方程在(1+1)尺寸。为联合TL-RTLequations的层次的Darboux转变被构造。在联合TL-RTLequations的层次的开始的二个成员的答案,以及新(2+1)维的格子方程被theDarboux明确地获得转变。

  • 标签: 组合TL-RTL方程 可积系统 Darboux转化 Toda晶格方程
  • 简介:LetL=L0+VbethehigherorderSchrdigertypeoperatorwhereL0isahomogeneousellipticoperatoroforder2mindivergenceformwithboundedcoefficientsandVisarealmeasurablefunctionasmultiplicationoperator(e.g.,including(-?)m+V(m∈N)asspecialexamples).Inthispaper,assumethatVsatisfiesastronglysubcriticalformconditionassociatedwithL0,theauthorsattempttoestablishatheoryofHardyspaceHpL(Rn)(0

  • 标签: Hardy空间 椭圆算子 薛定谔 高阶 HL 可测函数
  • 简介:基于低精力QCDLagrangian质子上的理论和交叉对称关系,奇怪的介子相片生产和它的联系放射的俘获reinvestigated在[SU_(SF)(6)直接XO(3)]_(sym)。工具条的DirectXSU_C(3)夸克模型有一个仅仅一样的输入参数的那里的结构,唯一的强壮的联合常数α_M。为生气的节,γ+p→K~++Λ反应的p极化和为有Y=Λ的K~-+p→γ+Y的K~放射的俘获的分叉的比率的计算,Σ~0被执行。到数据的好协议被获得,结果证明与传统的现象学的模型相比,低energyQCDLagrangian理论提供对奇怪的mesonphoto生产和它的联系放射的俘获的成功的、统一描述。

  • 标签: 低能QCD拉格朗日量 夸克 胶子 重子
  • 简介:Thepurposeofthisstudyistoexploretheexpressionofgrowth-associatedprotein(GAP-43)inspinalcordsegmentsconnectedwithinjuredsciaticnervebythetreatmentwithbrazileininmice.Unilateralsciaticnerveinterruptionandanastomosiswereperformed.Physiologicalsaline(blankgroup),highdose,middledoseandlowdoseofbrazileinwereadministratedintragastricallytohealthyadultBALB/cmiceinseparategroups.L4―6spinalsegmentsconnectedwiththesciaticnervewereharvested.Real-timePCR(Polymerasechainreaction)andWesternblotanalysiswereperformedtodetecttheexpressionofGAP-43inspinalsegments.Histologicalstainingonmyelinandtheelectrophysiologywereperformedtoexaminethesciaticnerverecovery.GAP-43wasactivatedinspinalcordL4―6connectedwithinjuredsciaticnerve.Inthesurvivaltimeof12h,24h,3d,5d,7dand14d,GAP-43expressioninthemotorneuronsofspinalcordofthehighdosegroupandthatinthemiddledosegroupweresignificantlyhigherthanthoseonthelowdoseandblankgroups.MyelininthehighdosegroupandthatinthemiddledosegroupweremorematureandthepotentialamplitudeandMNCV(motornerveconductionvelocity)inthehighandmiddledosegroupswereobviouslyhigherthanthoseinthelowdosegroupandblankgroup.BrazileinfacilitatestheexpressionofGAP-43inneuronsinspinalcordL4―6segmentsconnectedwithinjuredsciaticnerve,whichpromotesnerveregeneration.

  • 标签: 脊髓神经元 生长相关蛋白 坐骨神经 受伤 小鼠 激活
  • 简介:Thetop-pairproductioninassociationwithaZ~0-bosonataphoton-photoncolliderisanimportantprocessinprobingthecouplingbetweentop-quarksandvectorbosonanddiscoveringthesignatureofpossiblenewphysics.WedescribetheimpactofthecompletesupersymmetricQCD(SQCD)next-to-leadingorder(NLO)radiativecorrectionsonthisprocessatapolarizedorunpolarizedphotoncollider,andmakeacomparisonbetweentheeffectsoftheSQCDandthestandardmodel(SM)QCD.Weinvestigatethedependenceofthelowest-order(LO)andQCDNLOcorrectedcrosssectionsinboththeSMandminimalsupersymmetricstandardmodel(MSSM)oncollidingenergys~(1/2)indifferentpolarizedphotoncollisionmodes.TheLO,SMNLO,andSQCDNLOcorrecteddistributionsoftheinvariantmassoftt-pairandthetransversemomentaoffinalZ~0-bosonarepresented.OurnumericalresultsshowthatthepureSQCDeffectsinγγ→ttZ~0processcanbemoresignificantinthe++polarizedphotoncollisionmodethaninothercollisionmodes,andtherelativeSQCDradiativecorrectioninunpolarizedphotoncollisionmodevariesfrom32.09%to-1.89%whens~(1/2)goesupfrom500GeVto1.5TeV.

  • 标签: 量子色动力学 光子对撞机 矢量玻色子 超对称 非线性光学 碰撞模式
  • 简介:一个数字算法为包含与排干和涂层流动联系的第三顺序的平常的微分方程的某些边界价值问题的答案的近似被开发。数字算法获得的近似解决方案用nonpolynomialquintic花键函数发展了由的作者表演比另外的花键和域分解方法生产的那些好。算法在与排干和涂层流动表明途径的实际实用性联系的二个问题上被测试。

  • 标签: 多项式样条 数值算法 三阶边值问题 涂料 排水 三阶常微分方程
  • 简介:FERMI,theseededfreeelectronlaser(FEL)inoperationinItaly,isprovidingtheUserCommunitywithuniquefullycoherentradiation,inthewavelengthrange100–4nm.FERMIisthefirstFELfullysynchronizedbymeansofopticalfibers.Theopticaltimingsystemensuresanultra-stablephasereferencetoitsdistributedclients.Severalfemtosecondlongitudinaldiagnosticsverifytheachievedperformance;thebunchlengthmonitor(BLM)andthebuncharrivalmonitor(BAM)willbepresentedinthispaper.Feedbacksystemsplayacrucialroletoguaranteetheneededlongtermelectronbeamstability.Areal-timeinfrastructureallowsshot-to-shotcommunicationbetweenfront-endcomputersandtheservers.Orbitfeedbacksareusefulinmachinetuning,whereaslongitudinalfeedbackscontrolelectronenergy,compressionandarrivaltime.Aflexiblesoftwareframeworkallowsarapidimplementationofheterogeneousmultiinput–multi-output(MIMO)longitudinalloopssimplybyselectingtheappropriatesensorsandactuators.

  • 标签: FEEDBACK system FEMTOSECOND longitudinal DIAGNOSTICS OPTICAL