简介:在这份报纸,我们获得(WH1,WH1)为Marcinkiewicz积分的类型估计并且(WHb,1,WH1)为整流器的类型估计由BMO功能和Marcinkiewicz积分产生了,在核满足某个对数的地方
简介:TwoestimatesusefulinapplicationsareprovedfortheFouriertransforminthespaceL2(X),whereXasymmetricspace,asappliedtosomeclassesoffunctionscharacterizedbyageneralizedmodulusofcontinuity.
简介:LetL=-△+VbeaSchrodingeroperatoronRn(n≥3),wherethenon-negativepotentialVbelongstoreverseHolderclassRHq1forq1>n/2.LetHLp(Rn)betheHardyspaceassociatedwithL.Inthispaper,weconsiderthecommutator[b,Tα],whichassociatedwiththeRiesztransformTα=Vα(-?+V)-αwith0<α≤1,andalocallyintegrablefunctionbbelongstothenewCampanatospaceΛβθ(ρ).Weestablishtheboundednessof[b,Tα]fromLp(Rn)toLq(Rn)for1
简介:ThispaperconsidersthepointwiseestimateofthesolutionstoCauchyproblemforquasilin-earhyperbolicsystems,whichbasesontheexistenceofthesolutionsbyusingthefundamentalsolutions.Itgivesasharppointwiseestimatesofthesolutionsondomainunderconsideration.Specially,theestimateispreciseneareachcharacteristicdirection.
简介:整流器μΩ,Marcinkiewicz不可分的μΩ概括的b和功能b(x)∈的围住的海角在同类的Morrey-Herz空格的CBMOq(Rn)被建立。
简介:Amodifiedpolynomialpreservinggradientrecoverytechniqueisproposed.Unlikethepolynomialpreservinggradientrecoverytechnique,thegradientrecoveredwiththemodifiedpolynomialpreservingrecovery(MPPR)isconstructedelement-wise,anditisdiscontinuousacrosstheinterioredges.OneadvantageoftheMPPRtechniqueisthattheimplementationiseasierwhenadaptivemeshesareinvolved.SuperconvergenceresultsofthegradientrecoveredwithMPPRareprovedforfiniteelementmethodsforellipticboundaryproblemsandeigenvalueproblemsunderadaptivemeshes.TheMPPRisappliedtoadaptivefiniteelementmethodstoconstructasymptoticexactaposteriorierrorestimates.Numericaltestsareprovidedtoexaminethetheoreticalresultsandtheeffectivenessoftheadaptivefiniteelementalgorithms.