简介:我们学习公制的n躺着代数学G\mathcal的结构{G}在复杂领域上。让G=S?R\mathcal{G}=\mathcal{S}\oplus\mathcal{R}是Levi分解,在此R\mathcal{R}是G\mathcal的激进分子{G}并且S\mathcal{S}是G\mathcal的强壮的semisimplesubalgebra{G}。由m(G)表示m\left(\mathcal{G}\right)不能分解的公制的n躺着代数学和R^\mathcal的所有最小的理想的数字{R}^\botR的直角的补充。我们获得下列结果。作为S\mathcal{S}-modules,R^\mathcal{R}^\bot对双模块同形${\mathcal{G}\mathord{\left/{\vphantom{\mathcal{G}\mathcal{R}}}\right。\kern-\nulldelimiterspace}\mathcal{R}}${\mathcal{G}\mathord{\left/{\vphantom{\mathcal{G}\mathcal{R}}}\right。\kern-\nulldelimiterspace}\mathcal{R}}。向量空间的尺寸在G\mathcal上由所有nondegenerate跨越了不变的对称的双线性的形式{G}等于G\mathcal上的某些线性转变的向量空间的{G};这种尺寸比大或等于+1m\left到m(G)(\mathcal{G}\right)+1。R\mathcal的centralizer{R}在G\mathcal{G}等于所有最小的理想的和;它是R^\mathcal的直接的和{R}^\bot和G\mathcal的中心{G}。最后,G\mathcal{G}没有强壮的semisimple理想如果并且仅当R^椠?楤晳癡?
简介:OBJECTIVE:Evenduringthemicrosurgicalera,tentorialmeningiomaspresentaformidablesurgicalchallengewhentumorinvolvescriticalneurovascularstructures.Wereportourexperiencewithtentorialmeningiomawithregardtoclinicalpresentation,diagnosticworkup,microsurgicaltechnique,complications,andfollow-upresults.METHODS:Inaretrospectivestudy,wereviewedthemedical
简介:Inthispaper,wediscusstheclassicalriskprocesswithstochasticreturnoninvestment.Weprovesomepropertiesoftheruinprobability,thesupremumdistributionbeforeruinandthesurplusdistributionatthetimeofruinandderivetheintegro-differentialequationssatisfiedbythesedistributionsrespectively.
简介:ThelargescalelinearsystemswithM-matricesoftenappearinawidevarietyofareasofphysical,fluiddynamicsandeconomicsciences.Itisreportedin[1]thattheconvergencerateoftheIMGSmethod,withthepreconditionerI+S_α,issuperiortothatofthebasicSORiterativemethodfortheM-matrix.ThispaperconsidersthepreconditionedJacobi(PJ)methodwiththepreconditionerP=I+S_α+S_β,andprovestheoreticallythattheconvergencerateofthePJmethodisbetterthanthatofthebasicAORmethod.Numericalexamplesareprovidedtoillustratethemainresultsobtained.
简介:MULTIPLICITYRESULTSFORAFOURTH-ORDERBOUNDARYVALUEPROBLEMMaRuyun(马如云)MaQinsheng(马勤生)(ReceivedOct.5.1994:CommunicatedbyLinZongch...
简介:Thispaperdealswiththeinitial-valueproblemofnonlinearevolutioninclusionsoftheformdB(u)/dt+A(u)f,v0∈B(u)(0),wheretheoperatorBisinducedbyasubgradientandAispseudomonotone.Existencetheoremisestablishedviathetimediscretizationtechniqueandtheregularizationmethod.Incontrasttothepreviousresults,hereweimposeaweakercoercivenessconditiononAandremovethestrongmonotonicityfromB.
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简介:AIMTo调查在patients.METHODSNon-DSEK在接枝拒绝率,和它的全面程序的有效性上剥去endothelialkeratoplasty(non-DSEK)的non-Descemet的影响在64个病人,和程序的结果的65只眼睛上被执行包括接枝的拒绝事件,失败和脱臼,最好改正的视觉尖酸(BCVA),endothelial房间密度(ECD),和另外的复杂并发症,是65看的分析retrospectively.RESULTSOf,63从bullouskeratopathywi恢复了吝啬的后续时间是26.4mo(范围,6-84mo)。吝啬的BCVA在外科以后在1y在3mo,在6mo的0.46logMAR,和0.37logMAR外科手术前地从1.70logMAR改善了到0.54logMAR。成功地经历了镜子的显微镜的检查的25个病人的手术后的施主ECD是1918<
简介:Inthispaper,thedefinitionsofBayesestimator,minimaxestimator,minimumriskequivariantestimatorandadmissibleestimatorunderthegeneralmatrixlossfunctionaregiven.Severalresultsonestimationofparameterswiththeordinarylossfunctionareextendedtothecaseofthematrixlossfunction.
简介:Sufficientconditionsforthenonoscillatorysolutionsofaclassofthirdordernonlineardifferentialequationsarepresented.TheresultsobtainedgeneralizesomecriteriagivenbyParhi.Insomespecialca,ses,someoftheseresultscontainweakerconditions.