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159 个结果
  • 简介:Inthispaper,weconsidertheapproximationproblemofstochasticintegralwithrespecttotwo-parameterWienerprocess.Wefirstintroduceakindofsymmetricintegralandproveitobeysthechainrule.Thenweapplyanintegralformulaofboundedvariationfunctionswithtwovariablestoshowtheapproximationtheoremofstochasticintegralintheplane.Inparticular,weprovethatthesymmetricstochasticintegralisstablewhenthelimitistakeninthesenseofL~2convergence.

  • 标签: stochastic SYMMETRIC WIENER apply BROWNIAN varia
  • 简介:TheKurzweil-HenstockintegralformalismisappliedtoestablishtheexistenceofsolutionstothelinearintegralequationsofVolterra-typewherethefunctionsareBanach-spacevalued.SpecialtheoremsonexistenceofsolutionsconcerningtheLebesgu3integralsettingareobtained.Thesesharpenearlierresults.

  • 标签: LINEAR VOLTERRA INTEGRAL EQUATIONS Kurzweil-Henstock INTEGRALS
  • 简介:Inthispaper,westudytheLpboundednessforthesingularintegraloperatorsofR.Fef-fermanwhenthekernelsatisfiescertainsizecondition.Wealsoconsiderthecorrespondingmaximalsingularintegraloperators.

  • 标签: 公告
  • 简介:Inthispaper,weprovethatthemaximaloperatorsatisfiesishomogeneousofdegree0,hasvanishingmomentuptoorderMandsatisfiesLq-Diniconditionforsome

  • 标签:
  • 简介:Theboundaryintegralequation(BIE)ofdisplacementderivativesisputatadisadvantageforthedifficultyinvolvedintheevaluationofthehypersingularintegrals.Inthispaper,theoperatorsδijandεijareusedtoactonthederivativeBIE.Theboundarydisplacements,tractionsanddisplacementderivativesaretransformedintoasetofnewboundarytensorsasboundaryvariables.AnewBIEformulationtermednaturalboundaryintegralequation(NBIE)isobtained.TheNBIEisappliedtosolvingtwo-dimensionalelasticityproblems.IntheNBIEonlythestronglysingularintegralsarecontained.TheCauchyprincipalvalueintegralsoccurringintheNBIEareevaluated.AcombinationoftheNBIEanddisplacementBIEcanbeusedtodirectlycalculatetheboundarystresses.ThenumericalresultsofseveralexamplesdemonstratetheaccuracyoftheNBIE.

  • 标签: BEM NATURAL BIE elasticity principal VALUE
  • 简介:TheHardyintegralinequalityisoneofthemostimportantinequalitiesinanalysis.ThepresentpaperestablishessomenewCopson-Pachpatte(C-P)typeinequalities,whicharethegeneralizationsoftheHardyintegralinequalitiesonbinaryfunctions.

  • 标签: 积分不等式 Pachpatte 二元函数
  • 简介:ThestressrateintegralequationsofelastoplasticityarededucedbasedonRef.[1]byconsistentmethods.Thepointatwhichthestressesand/ordisplacementsarecalculatedcanbeinthebodyorontheboundary,andintheplasticregionorelasticone.Theexistenceoftheprincipalvalueintegralintheplasticregionisdemonstratedstrictly,andthetheoreticalbasisispresentedforthepaticularsolutionmethodbyunitinitialstressfields.Inthepresentmethod,programmingiseasyandgeneral,andthenumericalresultsareexcellent.

  • 标签: the STRESS rate of INNER point
  • 简介:ForasimpleundirectedgraphG,denotebyA(G)the(0,1)-adjacencymatrixofG.LetthematrixS(G)=J-I-2A(G)beitsSeidelmatrix,andletSG(λ)=det(λI-S(G))beitsSeidelcharacteristicpolynomial,whereIisanidentitymatrixandJisasquarematrixallofwhoseentriesareequalto1.IfalleigenvaluesofSG(λ)areintegral,thenthegraphGiscalledS-integral.Inthispaper,ourmaingoalistoinvestigatetheeigenvaluesofSG(λ)forthecompletemultipartitegraphsG=Kn1,n2,...,nt.AnecessaryandsufficientconditionforthecompletetripartitegraphsKm,n,tandthecompletemultipartitegraphsKm,...,ms,n,...,nttobeS-integralisgiven,respectively.

  • 标签: 完全多部图 积分 邻接矩阵 特征多项式 单位矩阵 充分条件
  • 简介:Inthispaper,weintroducenewsufficientconditionsforcertainintegraloperatorstobestarlikeandp-valentlystarlikeintheopenunitdisk.

  • 标签: 积分算子 星形 判据 充分条件
  • 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:在现在的纸,作者介绍让步的新不可分的变换很多潜在地有用(知道或新)不可分的transfoms作为它的特殊情况。关于这新不可分的变换的许多基本结果,在这份报纸被建立,包括(例如)存在定理,Parseval类型关系和倒置公式。在有H功能和H变换的新不可分的变换之间的关系借助于一些不可分的身份被描绘。介绍变换也被用来发现答案到某个微分方程。一些解说性的例子也被给。

  • 标签: 积分变换 应用 存在性定理 积分恒等式 反演公式 微分方程
  • 简介:Inthispaper,asimplebutinherentrelationbetweentheL-integralandtheBueeknerworkconjugateintegralisprovedforcrackproblemsinisotropic,anisotropic,anddissimilarmateri-als,respectively.Itisfoundthat,intheabove-mentionedthreecases,theL-integral,fromthemath-ematicalpointofviewaswellasinprinciple,arisesfromBetti’sreciprocaltheorem.ThismeansthattheBuecknerworkconjugateintegralisamoregeneralpath-independentintegralthantheotherssinceanyotherpath-independentintegralscouldbederivedbyusin8theBuecknerintegralwhilechoosingadifferentsubsidiarystress-displacementfield.

  • 标签: INTEGRAL work CONJUGATE INTEGRAL crack SUBSIDIARY
  • 简介:Lp(Rn)boundednessisconsideredforthemultilinearsingularintegraloperatordefinedbyTAf(x)=∫RnΩ(x-y)/|x-y|n+1(A(x)-A(y)-(△)A(y)(x-y))f(y)dy,whereΩishomogeneousofdegreezero,integrableontheunitsphereandhasvanishingmomentoforderone.AhasderivativesoforderoneinBMO(Rn).WegiveasmoothnessconditionwhichisfairlyweakerthanthatΩ∈Lipα(Sn-1)(0<α≤1)andimpliestheLp(Rn)(1<p<oo)boundednessfortheoperatorTA.Someendpointestimatesarealsoestablished.

  • 标签: 多线性奇异积分算子 零度均匀 端点估计 光滑条件 BMO
  • 简介:Wegiveanecessaryandsufficientconditionforanabstractintegration(Definition1)tobethegeneralDenjoyintegral(D-integral).Thisisarevisedversionoftheauthor'spaper[2].

  • 标签: Denjoy积分 充要条件 固定紧区间 连续
  • 简介:Thepaperdiscusseshowtoreducehighersingularityorderofaboundaryintegralequation.Theapproachwillbediscussedinsomedetailforplaneelasticity.Numericalresultsforthemeshesofunequallengthboundaryelementsarereported.Higherprecisionforbothdeflectionandforceisobtainedthanthatobtainedwithageneralboundaryelementmethod.

  • 标签: BOUNDARY ELEMENT non-singularity