简介:Schroedingeroperatorisacentralsubjectinthemathematicalstudyofquantummechanics.ConsidertheSchrSdingeroperatorH=-Δ+VonR,whereΔ=d^2/dx^2andthepotentialfunctionVisrealvalued.InFourieranalysis,itiswell-knownthatasquareintegrablefunctionadmitsanexpansionwithexponentialsaseigenfunctionsof-Δ.AnaturalconjectureisthatanL^2functionadmitsasimilarexpansionintermsof"eigenfunctions"ofH,aperturbationoftheLaplacian(see[7],Ch.XIandthenotes),undercertainconditiononV.
简介:InthispaperweprovesomeinterestingextensionsandgeneralizationsofEnestrom-KakeyaTheoremconcerningthelocationofthezerosofapolynomialinacomplexplane.Wealsoobtainsomezero-freeregionsforaclassofrelatedanalyticfunctions.Ourresultsnotonlycontainsomeknownresultsasaspecialcasebutalsoavarietyofinterestingresultscanbededucedinaunifiedwaybyvariouschoicesoftheparameters.
简介:Inthispaper,theL^2-boundednessofaclassofparametricMarcinkiewiczintegralμa,h^pwithkernelfunctionΩinBq^0.0(s^n-1)forsomeq>1,andtheradialfunctionh(x)∈l∞(L^s)(R+)for1
简介:Inthispaper,theso-calledlocallikelihoodmethodissuggestedforsolvingthechangepointproblemswhenthedataaredistributedasmultivariatenormal.Thedetectionproceduresproposednotonlyprovidestronglyeonsistentestimatesforthenumberandlocationsofthechangepoints,butalsosimplifysignificantlythecomputation.
简介:有Hopf代数学的至少二种归纳,即pre鈥揌opf代数学和弱Hopf代数学。相应地,我们有二种概括bialgebras,几乎bialgebra和弱bialgebra。让=(,?,我,一,l,r)是一个张肌范畴。由放弃我,l,r并且保留?,一在里面,第一个作者那么得到了鈥揷alledpre鈥搕ensor范畴=(,?,一)并且使用它在Comm描绘几乎bialgebra和pre鈥揌opf代数学。在代数学,32(2):397鈥?41(2004)。我们在这份报纸的目的是概括张肌范畴=(,?,我,一,l,r)由削弱自然同晶型l,r,即交换自然同晶型ll?1=rr?1个=标志进常规自然转变ll?l=l,rr?有一些另外的条件的r=r并且那么得到鈥揷alled弱张肌范畴以便描绘弱bialgebra和弱Hopf代数学。在这些之间的关系概括了(bialgebras)Hopf代数学和二种类型概括了张肌范畴将被图使用描述。而且,关于弱张肌范畴的一些相关概念和性质将被讨论。关键词弱张肌范畴-弱Hopf代数学-Pre鈥揌opf代数学-Strictization先生(2000)题目分类16W30-18D10-16W35工程在大学里为新世纪优秀才能由节目支持了(号码04鈥?522),中国(号码10571153)的国家自然科学基础和中国(号码102028)的浙江省的自然科学基础
简介:Inthispaperweconsidersomerelatednegativehypergeometricdistributionsarisingfromtheproblemofsamplingwithoutreplacementfromanurncontainingballsofdifferentcoloursandindifferentproportionsbutstoppingonlyaftersomespecificnumberofballsofdifferentcolourshavebeenobtained.Withtheaidofsomesimplerecurrencerelationsandidentitiesweobtaininthecaseoftwocoloursthemomentsforthemaximumnegativehypergeometricdistribution,theminimumnegativehypergeometricdistribution,thelikelihoodrationegativehypergeometricdistributionandconsequentlythelikelihoodproportionalnegativehypergeometricdistributiuon.TotheextentthatthesamplingschemeisapplicabletomodellingdataasillustratedwithabiologicalexampleandinfactmanysituationsofestimatingBernoulliparametersforbinarytraitswithinafinitepopulation,theseareimportantfirst-stepresults.
简介:In1980'sdifferentialgeometricmethodsaresuccessfullyusedtostudycurvedexpomentialfamiliesandnormalnonlinearregressionmodels.Thispaperpresentsanewgeometricstructuretostudymultinomialdistributionmodelswhichcontainasetofnonlinearparameters.Basedonthisgeometricstructure,thesuthorsstudyseveralasymptoticpropertiesforsequentialestimation.Thebias,thevarianceandtheinformationlossofthesequentialestimatesaregivenfromgeomentricviewpoint,andalimittheoremconnectedwiththeobservedandexpectedFisherinformationisobtainedintermsofcurvatvremeasures.Theresultsshowthatthesequentialestimationprocedncehassomebetterpropertieswhicharegenerallyimpossiblefornonsequentialestimationprocedures.
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:Thefollwingsituationinusingthemethodofleastsquarestosolveproblemsoftenoccurs.Aftermexperimentscompletedandasolutionofleastsquaresobtained,the(m+1)-thexperimentismadefurtherinordertoimprovetheresults.Amethodofalgebraicoperationofspecialmatricesinvoledintheproblemisgivenisthispaperforobtaininganewsolutionforthem+1experimentsbasedupontheoldsolutionfortheprimarymexperiments.Thismethodisvalidformoregeneralmatrices.
简介:在这份报纸,我们首先随思考调查零和的二播放器的随机的微分比赛,在理论的帮助下反映了向后的随机的微分方程(RBSDE)。我们将建立动态编程原则为上面并且有以一个直接方法的思考的这种随机的微分比赛的更低的价值功能。然后上面并且更低的值函数被证明是的唯一的粘性答案联系上面并且有障碍的更低的Hamilton-Jacobi-Bellman-Isaacs方程分别地。方法与随思考为控制问题使用的那些显著地不同,与自己兴趣开发的新技术。进一步,我们也为在ElKaroui,Kapoudjian,Pardoux,Peng和Quenez(1997)的纸是比那锋利的RBSDE证明新估计,因为它允许我们由向前开车的起始的价值的距离的p-th力量估计二不同RBSDE的答案的Lp距离,它结果很有用方程。我们也证明penalization方法构造的接近的以撒方程的唯一的粘性答案与障碍收敛到以撒方程的粘性答案。