学科分类
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47 个结果
  • 简介:AsChinaexpandsitsofficialdevelopmentassistance(ODA)inSoutheastAsia,isChineseaidbeginningtoemulateinternationalnormsandpracticesorinsteadestablishingitsowndistinctapproachtodevelopmentassistance?ThisessayarguesthatChina’ssocializationintointernationalnormsvarieswiththethicknessoftheinstitutionalenvironment.InCambodiaandLaos,China’saidprogramshowssignsofalignmentwithinternationalaidpractices.Attheregionallevel,however,Chinaisbeginningtoactmorelikeanorm-maker.Throughexpandingitsfinancialsupportforselectregionalinitiatives,Beijingisbolsteringitsabilitytoshapethenormsandpracticesofregionaldevelopmentalinstitutions.China’srisingODAinSoutheastAsiaposesapotentialchallengetoAustralia’sinfluenceintheregion,butalsoprovidesopportunitiesforgreaterdiplomaticengagementandcooperationinsupportofregionaldevelopment.

  • 标签: 东南亚 制造商 中国 官方 国际规范 厚度变化
  • 简介:TheboundednessandthenormofaclassofintegraloperatorsTa,b,conLλPspacesarestudiedinthispaper.TheauthornotonlygivesthesufficientandnecessaryconditionfortheboundednessofTa,b,conLλP,butalsoobtainsitsaccuratenormonLλpforsomerangeundertheconditionofc=n+a+b.

  • 标签: 积分算子 有界性 范数 P空间 TA
  • 简介:ApeaknormisdefinedforLpspacesofE-valuedBochnerintegrablefunctions,whereEisaBanachspace,andbestapproximationsfromasuntoelementsofthespacearecharacterized.Applicationsaregiventosomefamiliesofsimultaneousbestapproximationproblems.

  • 标签: 万州
  • 简介:让Sq-1,q≥2,联合起来的范围的表面在欧几里德几何学的spaceRq,f(x)∈Lp(Sq-1),f(x)≥0,f吗?0,1≤p≤+∞。然后,它在现在的纸被证明有顺序≤N和经常的C>的球形的泛音PN(x)0以便‖f-1/P_N‖L_p≤Cω(f,N~(-1))Lp,在哪儿ω(f,吗δ)Lp=sup_(0

  • 标签: 球面调和函数 近似值 倒数多项式 平移算子 EUCLIDEAN空间
  • 简介:TheauthorsinvestigatetheconditionsforthebotmdednessofBergmantypeoperatorsPa,tinmixednormspaceLp,q(μ)ontheunitballofC^n(n≥1),andobtainasufficientconditionandanecessaryconditionforgeneralnormalfunctionμ,andasufficientandnecessaryconditionforμ(r)=(1-r^2)^αlog^β(2(1-r)^-1)(α>0,β≥0),ThisgeneralizestheresultofForelli-Rudin[3]onBergmanoperatorinBergmanspace.Asapplications,amorenaturalmethodisgiventocomputethedualityofthemixednormspace,solvetheGleason'sproblemformixednormspaceandobtainthecharacterizationofmixednormspaceintermsofpartialderivatives.Moreover,itisprovedthatf∈L^(0)∞,q(μ)forholomorphicfunctionf,1≤q≤∞.

  • 标签: Bergman算子 混合标准空间 正规函数 边值
  • 简介:Letf(x)∈C[-1,1],pn*(x)bethebestapproximationpolynomialofdegreentof(x).G.Iorentzconjecturedthatifforalln,p2n*(x)=p2n+1*(x),thenfiseven;andifp2n+1*(x)=p2n+2*(x),po*(z)=0,thenfisodd.Inthispaper,itisprovedthat,undertheL1-norm,theLorentzconjectureisvalidconditionally,i.e.if(i)(1-x2)f(x)canbeextendedtoanabsolutelyconvergentTehebyshevsories;(ii)foreveryn,f(x)-p2n+1*(x)hasexactly2n+2zeros(or,inthearcondsituation,f(x)-p2n+2*(x)hasexaetly2n+3zeros),thenLorentzconjectureisvalid.

  • 标签: LORENTZ absolutely CONJECTURE polynomial EXACTLY 二忍
  • 简介:InthispaperwediscussthegeneralizationsoftheKantorovichinequalityandobtainsomegeneralizedKantorovichinequalitiesinthesenseofmatrixnorm.Wefurtherillustratehowtousetheseinequalitiestodeterminethelowerboundofrelativeefficiencyoftheparameterestimateinlinearmodel.

  • 标签: KANTOROVICH不等式 矩阵范数 参数估计 实对称矩阵 列空间
  • 简介:这篇论文与变化时间的延期探讨polytopic系统的Hankel标准。延期依赖者足够的条件被介绍以便polytopic系统是稳定的,polytopic系统的Hankel标准是不到规定数量以线性矩阵不平等。一个数字例子被举。

  • 标签: 多元分布系统 时间变换延迟 标量 线性矩阵
  • 简介:在这份报纸,我们估计了伯恩斯坦2l广告justed插值多项式操作员的标准,并且证明评价是锋利的。

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  • 简介:InthispaperweestablisharesultaboutuniformlyequivalentnormsandtheconvergenceofbestapproximantpairsontheunitaryballforafamilyofweightedLuxemburgnormswithnormalizedweightfunctionsdependingonε,whenε→0.ItisintroducedageneralconceptofPadeapproximantandwestudyitsrelationwiththebestlocalquasi-rationalapproximant.Wecharacterizethelimitoftheerrorforpolynomialapproximation.WealsoobtainanewconditionoveraweightfunctioninordertoobtaininequalitiesinLpnorm,whichplayanimportantroleinproblemsofweightedbestlocalLpapproximationinseveralvariables.

  • 标签: 最佳局部逼近 加权卢森堡范数 勒贝格测度 实函数
  • 简介:这篇论文涉及近似可控制性的费用和热方程的空可控制性的界限,即,最小的Lp需要近似控制系统的控制或控制的标准和L∞标准需要驾驶系统的状态到零。我们使用的方法联合observability不平等,为热方程的精力估计和双理论。

  • 标签: 近似可控性 成本估算 热方程 脂蛋白 Z规范 La
  • 简介:Westudythenormretrievalbyprojectionsonaninfinite-dimensionalHilbertspaceH.Let{e_i}_(i∈I)beanorthonormalbasisinHandW_i={e_i}~⊥foralli∈I.Weshowthat{W_i}_(i∈I)doesnormretrievalifandonlyifIisaninfinitesubsetofN.Wealsogivesomepropertiesofnormretrievalbyprojections.

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  • 简介:Radialfunctionshavebecomeausefultoolinnumericalmathematics.Onthespheretheyhavetobeidentifiedwiththezonalfunctions.Weinvestigatezonalpolynomialswithmassconcentrationatthepole,inthesenseoftheirL1-normisattainingtheminimumvalue.Suchpolynomialssatisfyacomplicatedsystemofnonlineare-quations(algebraicifthespacedimensionisodd,only)andalsoasingulardifferentialequationofthirdorder.Theexactorderofdecayoftheminimumvaluewithrespecttothepolynomialdegreeisdetermined.Byourresultswecanprovethatsomenodalsystemsonthesphere,whicharedefinedbyaminimum-property,areprovidingfundamentalmatriceswhicharediagonal-dominantorboundedwithrespecttothe∞-norm,atleast,asthepolynomialdegreetendstoinfinity.

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  • 简介:设A是一个布尔矩阵,γ(A)是布尔矩阵方程Ak=J成立的最小整数k,σ(A)是A中元素“1”的数目.本文考察了参数M′(k,n)=min{σ(A)|Ak=J,trace(A)=0},并得到M′(2,n)和M′(k,n)fork≥2n-6.另外,该文还完全确定了满足trace(A)=0,且σ(A)=3n-3的A2=J的解的特征

  • 标签: 本原有向图 本原矩阵 指数 范数
  • 简介:ConsideringaclassofoperatorswhichincludefractionalintegralsrelatedtooperatorswithGaussiankernelbounds,thefractionalintegraloperatorswithroughkernelsandfractionalmaximaloperatorswithroughkernelsasspecialcases,weprovethatiftheseoperatorsareboundedonweightedLebesguespacesandsatisfysomelocalpointwisecontrol,thentheseoperatorsandthecommutatorsoftheseoperatorswithaBMOfunctionsarealsoboundedongeneralizedweightedMorreyspaces.

  • 标签: 分数次积分算子 HERZ-MORREY空间 广义加权 范数不等式 广义MORREY空间 分数次极大算子
  • 简介:这篇文章的目的是为不可压缩的magnetohydrodynamic方程开发并且分析最少平方的近似。最少平方的有限元素方法的主要优点是它不受到所谓的Ladyzhenskaya相当於Mr或Sir的称谓?ka-Brezzi(LBB)状况。作者采用包含与在H-1的内部产品有关的一个分离内部产品的最少平方的functionals(蠅)。

  • 标签: 磁流体动力学 旋涡状态 负模 最小二乘混合有限元法
  • 简介:Thetheta(t)-typeoscillatorysingularintegraloperatorshasbeendiscussed.Withthenon-negativelocallyintegrableweightedfunction,theweightednorminequalityoftheta(t)-typeoscillatorysingularintegraloperatorsisproved,andtheweightedfunctionhasreplacedbyactionofHardy-Littlewoodmaximaloperatorsseveraltimes.

  • 标签: theta(t) -type OSCILLATORY singular integral weighted