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46 个结果
  • 简介:在这篇文章,我们与身份在一枚可交换的戒指上把几乎主要的submodules定义为单一的模块的主要、弱主要的submodules的新归纳。我们学习几乎主要的submodules的一些基本性质并且给他们的一些描述,为特别(有限地产生了忠诚)增加模块。

  • 标签: 素子模 作者 有限生成 交换环 模块 乘法
  • 简介:<正>IthasbeenconjecturedthatthereisahamiltoniancycleineveryfiniteconnectedCayleygraph.Inspiteofthedifficultyinprovingthisconjecture,weshowthatalmostallCayleygraphsarehamiltonian.Thatis,astheordernofagroupGapproachesinfinity,theratioofthenumberofhamiltonianCayleygraphsofGtothetotalnumberofCayleygraphsofGapproaches1.

  • 标签: Cay|ey GRAPH HAMILTONIAN RANDOM
  • 简介:ThealmostconvergentfunctionwhichwasintroducedbyRaimi[6]anddiscussedbyHo[4],DasandNanda[2,3],isthecontinuousanalogueofalmostconvergentsequences(see[5]).Inthispaper,weestablishtheTauberianconditionsandtheCauchycriteriaforweakalmostconvergentfunctionsonR~2+.

  • 标签: 收敛序列 定理 柯西准则 DAS
  • 简介:Inthispaper,itisobtainedthataperiodicsystemhasanalmostperiodicsolutionifithasasolutionx=(t)uniformlystablewithrespecttoΩ_,andhasaperiodicsolutionifx=(t)isweaklyuniformlyasymptoticallystablewithrespecttoΩ_.Meanwhile,itisalsoobtainedthatauniformlyalmostperiodicsystemhasanalmostperiodicsolutionifithasasolutionx=(t)uniformlyasymptoticallystablewithrespecttoA_~f

  • 标签: ASYMPTOTICALLY uniformly weakly SUPPOSE assume LEMMA
  • 简介:一、相同之处两者均可表示"几乎""差不多",均可修饰不定代词、形容词、副词、动词、介词短语等,此时两者常可换用。如:It’salmost[nearly]impossible.那几乎是不可能的。(修饰形容词)Healmost[nearly]alwaysarriveslate.他差不多总是迟到。(修饰副词)Hefellandalmost[nearly]brokehisleg.他摔了一跤,险些摔断了腿。(修饰动词)Almost[nearly]allthestudentspassedtheexam.差不多所有的学生都通过了考试。(修饰不定代词)

  • 标签: 异同 考试 不定代词 形容词 修饰 介词短语
  • 简介:Theinvarianceofstrongandalmostspirallikemappingsoftypeβandorderαisdiscussedinthispaper.Fromthemaximummodulusprincipleofholomorphicfunctions,weobtainthatthegeneralizedRoper-SuffridgeoperatorspreservestrongandalmostspirallikenessoftypeβandorderαontheunitballB~ninC~nandonboundedandcompleteReinhardtdomains.ThereforeweobtainthatthegeneralizedRoper-Suffridgeoperatorspreservestrongspirallikenessoftypeβ,strongandalmoststarlikenessoforderα,strongstarlikenessonthecorrespondingdomains.Thuswecanconstructmoresubclassesofspirallikemappingsinseveralcomplexvariables.

  • 标签: 螺形映照 变性 β型 最大模原理 全纯函数 单位球
  • 简介:Inthispapertheunsolvabilityofgeneralizedinverseeigenvalueproblemsalmosteverywhereisdiscussed.Wefirstgivethedefinitionsfortheunsolvabilityofgeneralizedinverseeigenvalueproblemsalmosteverywhere.Thenadoptingthemethodusedin[14],wepresentsomesufficientconditionssuchthatthegeneralizedinverseeigenvalueproblemsareunsohablealmosteverywhere.

  • 标签: MATRIX PENCIL INVERSE EIGENVALUE problem unsolvability.
  • 简介:在这篇文章,为复杂顺序的几乎星形的mappings的锋利的生长定理第一被给。第二,沿着一个联合起来的方向的失真定理也作为生长定理的申请被建立。特别地,使用我们的结果罐头还原剂到一些著名结果。

  • 标签: 生长定理 星形 失真 还原剂
  • 简介:Theasymptoticdistributionsareexactlysolvedforlinearlyindependentsolutionsconsideringproblemofthesecondorderandforthecoefficientsofasymptoticdistributiontherecurrentformulasareobtained.Further,usingobtainedrecurrentformulasthenecessaryandsufficientconditionsforalmostregularityofspectralproblemfortheequationofthesecondorderisproved.

  • 标签: 渐近线分布 谱线问题 二阶方程 边界调节 数学物理方法
  • 简介:作者主要在几乎爱因斯坦表面学习概括symplectic平均数弯曲流动,并且证明这流动没有类型--我奇特。在在到有对原版保角的周围的空间的度量标准的最小的表面的无穷的流动的图盒子,全球存在和集中中,一个人也被证明。

  • 标签: 平均曲率流 爱因斯坦 广义 整体存在性 收敛性 无穷远
  • 简介:Givenamappingfbetweencontinua.Let2^fandC(f)meantheinducedmappingsbetweenhyperspaces.Relationsarestudiedundertheconditions:fissemi-open(almostopen,respectively),2^fissemi-open(almostopen,respectively)andC(f)issemi-open(almostopen,respectively).

  • 标签: 人工映射 多维空间 半开区间 连续函数
  • 简介:ItisprovedthateachsufficientlylargeintegerN≡5(mod24)canbewrittenasN=p12+p22+p23+p24+p25with|pj-√N/5|≤U=N1/2-1/35+ε,wherepjareprimes.Thisresult,whichisobtainedbyaniterativemethodandahybridestimateforDirichletpolynomial,improvesthepreviousresultsinthisdirection.

  • 标签: 素数 可加性 循环法 迭代法 幂积分表达式
  • 简介:ForaclassofSISOnonlinearcontrolsystemswithparameteruncertaintyanalmostdisturbancedecouplingproblemwithstabilityisdefinedandinvestigated.Backsteppingtechniqueprovidesapractcaldesignmethodofcontroller,underwhichtheL2gainfromthedisturbancetothecontrolledoutputcanbearbitrarilysmallsubjecttononlinearuncertaintiesandtheclose-loopsystemisinternallyasymptoticallystable.

  • 标签: 非线性控制系统 不确定性 扰动解耦合
  • 简介:<正>Inthispaper,weprovethattheforcedpendulum-typeequation+Gx(x,t)=p(t),whereG(x,t)∈C1(R2)with1-periodicityinxsatisfiestheconditions:sup(x,t)∈R2|Gx(x,t)|<+∞andlimsupt→∞{supx∈R|(Gt(x,t))/t|}=0,possessesinfinitelymanyunboundedsolutionsonacylinderS1×Rforanyalmostperiodicfunctionp(t)withnonvauishingmeanvalue.

  • 标签: Pendulum-type equation Instability UNBOUNDED solution ALMOST