简介:TheZ=56bariumnucleirepresentoneofthebestexampleofanisotopicchaintoexploretheevolutionofquadrupoledeformationastheneutronnumberdecreases.Theneutron-deficientbariumisotopeswithmassnumberArangingfrom120to130couldbeeasilyproducedbytheheavy-ionfusionevaporationreactions,andthushavebeenwellstudiedinrayspectroscopyexperiments.
简介:WithintheframeworkoftheUsdpf(16)interactingbosonmodel(IBM),theeffectsofstrongcorrelationsofthedipole(p--boson)andtheoctupole(f--boson)degreeoffreedomonthepositive-paritystatesofeven-evennucleiinSU(3)limitarediscussed.Itisshownthatconfigurationsofanevennumberofmanyp-andf-bosonscannotonlybeincorporatedintotheusuallow-lyingcollectiverotationalbands,suchasthegroundstateband,β-andγ-vibrationalbands,butalsonaturallyformtheKπ=1+,3+rotationalbands,etc.TheseresultsaresimilartothatofUsdg(15)-IBMandinagreementwellwiththeexperimentaldataofthe17672Hf104nucleus.Besides,severalintrabandE2transitionprobabilitiesaregiven,whichareconsistentwiththatofUsd(6)-IBM.
简介:Thecompletelypositivematricesareimportantinthestudyofblockdesignsarizingincombinatorialanalysis(see[11])andarerelatedtocopositivematrices,whichhaveappli-cationsincontroltheoryandinmultimobicalprogramming(see[12]).Ann×nmatrixAissaidtobecompletelypositiveifAcanbefactoredasA=BB~Tforsomen×mrealmatrixBwithnonnegativeentriesforsomem<∞.IfAisacompletelypositivematrix,thenthesmallestnumberofcolumnsinanonnegativematrixBsuchthat
简介:Logicqubitplaysanimportantroleincurrentquantumcommunication.Inthispaper,weproposeanefficiententanglementconcentrationprotocol(ECP)foranewkindoflogicBellstate,wherethelogicqubitistheconcatenatedGreenber-Horne-Zeilinger(C-GHZ)state.OurECPreliesonthenondemolitionpolarizationparitycheck(PPC)gatesconstructedwithcross-Kerrnonlinearity,andcandistillonepairofmaximallyentangledlogicBellstatefromtwosamepairsofless-entangledlogicBellstates.BenefitfromthenondemolitionPPCgates,theconcentratedmaximallyentangledlogicBellstatecanberemainedforfurtherapplication.Moreover,ourECPcanbercpeatedtofurtherconcentratetheless-entangledlogicBellstate.ByrepeatingtheECP.thetotalsuccessprobabilitycanbeeffectivelyincreased.Basedonabovefeatures,thisECPmaybeusefulinfuturelong-distancequantumcommunication.
简介:为任意的给定的积极条款系列$\sum\limits_{k=1}^\infty{a_k}$并且$\sum\limits_{k=1}^\infty{b_k}$,现在的纸为$\mathop提供一个有趣的必要、足够的条件{啜}\limits_{n\geqslant1}\{\sum\limits_{k=1}^n{a_k/\sum\limits_{k=1}^n{b_k}}\}=\infty$。
简介:LetAbeann×nrealsymmetricmatrix.Aiscalledcompletelypositive(denoteA∈CP_n)ifA=B’Bforsomem×nnonnegativematrixBwheremisanintegeranddenotes
简介:最近,在矩阵是积极semidefinite和入口明智的nonnegative的地方,研究人员们对学习semidefinite编程(SDP)松驰模型感兴趣,为二次地抑制的二次的编程(QCQP)。比作基本SDP松驰,这个二倍地积极的SDP模型拥有另外的O(n2)限制,它与O(n)限制为基本模型使SDP答案复杂性比那实质地高。在这份报纸,我们证明二倍地积极的SDP模型与一套有效二次的切割等价于基本的。当QCQP对称、同类时(它代表许多古典组合并且nonconvex优化问题),甚至没有任何有效切割,二倍地积极的SDP模型等价于基本SDP。在另一方面,二倍地积极的SDP模型能帮助紧缩界限直到36%,但是不再。最后,我们设法把一些以前的结果递四次的模型。
简介:Inordertostudytheapproximationbyreciprocalsofpolynomialswithrealcoefficients,onealwaysassumesthattheapproximatedfunctionhasafixedsignonthegiveninterval.Sometimes,theapproximatedfunctionispermittedtohavefinitesignchanges,suchasl(l≥1)times.ZhouSongpinghasstudiedthecasel=1andl≥2inLpspacesinorderofpriority.Inthispaper,westudiedthecasel≥2inOrliczspacesbyusingthefunctionextend,modifiedJacksonkernel,Hardy-Littlewoodmaximalfunction,Cauchy-Schwarzinequality,andobtainedtheJacksontypeestimation.
简介:<正>Inthispaper,weprovethatthesetofallfactorizationindicesofacompletelypositivegraphhasnogaps.Inotherwords,wegiveanaffirmativeanswertoaquestionraisedbyN.KoganandA.Berman[8]inthecaseofcompletelypositivegraphs.
简介:我们为积极的任何一个或Urysohn不可分的方程的非零答案的存在建立新标准。我们也为Urysohn不可分的操作员与非零或积极特徵函数为至少一个积极特征值的存在讨论积极特征值和足够的条件的间隔的存在。在其它之中,我们为紧缩的地图基于固定的点索引理论采用技术,它为这类方程是新的。关键词Urysohn不可分的方程-积极答案-特征值先生(2000)题目分类45G10-47H10-47H30第一和第三个作者被MinisteriodeCienciayTecnolog铆a(西班牙)部分地支持了MTM2004鈥?06652鈥揅03鈥?3
简介:让m和n被固定的、积极整数和V.A。Menegatto(相应作者)发电子邮件:menegatt@icmc.usp.brC.P。Oliveira电子邮件:oliveira@unifei.edu.br言论集P。Peron电子邮件:apperon@icmc.usp.br参考书[1]。伯格,C.,Christensen,J.P.R.,Ressel,P.:半组,上的泛音分析积极明确、相关的函数的理论,在数学的毕业生文章,100,Springer-Verlag,纽约,1984[2]。Christensen,J.P.R.,Ressel,P.:复杂Hilbert范围上的积极的明确的核。数学。Z.,180(2),193201(1982)[3]。菲茨杰拉德,C.H.,Micchelli,C.A.,Pinkus,A.:保存积极的半的家庭的功能明确的矩阵。线性代数学Appl,221,83102(1995)[4]。赫,C.S.:Fonctionsopérantsurlesfonctionsdéfinies积极。安。Inst。Fourier(格勒诺布尔),13,161180(1963)[5]。角,R.A.:无穷地可分的矩阵和核的理论。Trans。Amer。数学。Soc,136,269286(1969)[6]。角,R.A.,约翰逊,C.R.:矩阵分析,剑桥大学出版社,剑桥新的约克,1985[7]。陆,F.,阳光,H.:在学习理论的积极的明确的点产品核。副词。Comput。数学,22(2),181198(2005)[8]。Menegatto,V.A.,Peron,A.P.,Oliveira,C.P.:有条件地积极的明确的点产品核。J。数学。肛门。Appl,321(1),223241(2006)[9]。Vasudeva,H.:积极明确的矩阵和绝对单音的补品功能。印度J。纯Appl。数学,10(7),854858(1979)[10]。Cucker,F.,Smale,S.:在学习的数学基础上。公牛。Amer。数学。Soc。(N.S),39(1),149(2002)[11]。Smola,J.S.,óvári,Z.L.,威廉森,R.C.:有点产品核的规则化,在在神经信息处理系统的进展13,ToddK。Leen,ThomasG。Dietterich,VolkerTresp(版本),从神经信息处理系统的报纸(捏)2000,丹佛,公司,美国,MIT出版社,2001[12]。Rudin