简介：本文用灰色关联系数来求解隶属度，提出一种类别标准已确定的综合评判模型与方法，并用于系统的排序分析．

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简介：The"o"saturationtheoremandthedegreeofLw^papproximationby(0-q'-q)typeHermite-Fejérinterpolatingpolynomialsformeanconvergenceareobtained.

简介：TheauthorsconsidertheextendedHeckegroupsH(λq)generatedbyT(z)=-1/z,S(z)=-1/(z+λq)andR(z)=1/-zwithλq=2cos(π/q)forq≥3aninteger.Inthispaper,theevensubgroupHe(λq),thesecondcommutatorsubgroupH"(λq)andtheprincipalcongruencesubgroupsHp(λq)oftheextendedHeckegroupsH(λq)arestudied.Also,relationsbetweenthemaregiven.

简介：PropertiesfortensorproductsofsemigroupsareconsideredandthesolutionsoftheequationAC-CB=Qarediscussed.Resultsobtainedinthispaperconsiderablygeneralizethoseobtainedin[9].

简介：ThispapereonsidersanARIMA（p,d,q）medel.Amethodforestimatingtheorderdandtestingthehypothesis:d=d0isgiven.Theasymptoticpropertiesoftheestimatorhavebeendiscussed.

简介：在这篇论文，我们基于非一致定义一个新非一致的四边的有限元素由在每个元素上强制限制的旋转Q_1元素，它有仅仅自由的三度。我们调查一致性，近似，超级靠近的性质，分离格林的功能和这个元素的超级集中。而且，我们建议一种newpostprocessing技术并且把它用于这个元素。帖子处理了分离答案，这被证明是超级的在网孔上的一个温和假设下面会聚。

简介：当生灭拟Q矩阵Q为全稳定或单瞬时时,Q过程的存在和构造问题已由Feller[1],杨向群[2]和唐令琪[3]解决,而当Q同时含有无穷多个瞬时态和无穷多个稳定态时,Q过程的存在和构造问题都变得十分困难。本文对“双无限”生灭拟Q矩阵,得到了生灭Q过程的存在定理。

简介：LetAbearealsquarematrixandVTAV=GbeanupperHessenbergmatrixwithpositivesubdiagonalentries,whereVisanorthogonalmatrix.ThentheimplicitQ-theoremstatesthatoncethefirstcolumnofVisgiventhenVandGareuniquelydetermined.Inthispaper,threeresultsareestablished.First,itholdsareverseorderimplicitQ-theorem:oncethelastcolumnofVisgiven,thenVandGareuniquelydeterminedtoo.Second,itisprovedthatforaKrylovsubspacetwoformulationsoftheArnoldiprocessareequivalentandinonetoonecorrespondence.Finally,bytheequivalencerelationandthereverseorderimplicitQ-theorem,itisprovedthatfortheKrylovsubspace,ifthelastvectorofvectorsequencegeneratedbytheArnoldiprocessisgiven,thenthevectorsequenceandresultingHessenbergmatrixareuniquelydetermined.

简介：文献[1]利用基本Dirichlet型构造了基本可逆Q过程P^*(t)，本文在此基础上，利用马氏半群无穷小算子的谱分解理论和Q过程的DonsKer-Varahan熵得到P^*（t)是不断的充要条件，并且还研究了P^*(t)的不变函数和不变测度。

简介：我们考虑四边的Q[1]isoparametric元素并且在承认各向异性的quadrilaterals并且允许的一个更弱的网孔条件下面为插值操作员在H1标准建立最佳的错误估计对四边在最大的角度状况的意义成为一个常规三角形。[从作者抽象]

简介：ForagraphG,P(G,λ)denotesthechromaticpolynomialofG.TwographsGandHaresaidtobechromaticallyequivalent,denotedbyG-H,ifP(G,λ)=p(H,λ).Let[G]={H|H-G}.If[G]={G},thenGissaidtobechromaticallyunique.Foracomplete5-partitegraphGwith5nvertices,defineθ(G)=(a(G,6)-2^n+1-2^n-1+5)/2n-2,wherea(G,6)denotesthenumberof6-independentpartitionsofG.Inthispaper,theauthorsshowthatθ(G)≥0anddetermineallgraphswithθ(G)=0,1,2,5/2,7/2,4,17/4.Byusingtheseresultsthechromaticityof5-partitegraphsoftheformG-Swithθ(G)=0,1,2,5/2,7/2,4,17/4isinvestigated,whereSisasetofedgesofG.Manynewchromaticallyunique5-partitegraphsareobtained.

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简介：InthispaperL^p-L^qestimatesforthesolutionu(x,t)tothefollowingperturbedhigh-erorderhyperbolicequationareconsidered,(ρπ--a△)(ρπ--b△)u+V(x)u=O,x∈R^n,n≥6,ρ1eu(x,O)=O,ρ^3eu(x,O)=f(x),(j=O,1,2).WeassumethattheotentialV(x)andtheinitialdataf(x)arecompactlysupported,andV(x)issufficientlysmall,thenthesolutionu(x,t)oftheaboveproblemsatisfiesthesameL^p-L^qestimatesasthatoftheunperturbedproblem.

简介：ThispaperconstructsasetofconfidenceregionsofparametersintermsofstatisticalcurvaturesforAR(q)nonlinearregressionmodels.Thegeometricframeworksareproposedforthemodel.Thenseveralconfidenceregionsforparametersandparametersubsetsintermsofstatisticalcurvaturesaregivenbasedonthelikelihoodratiostatisticsandscorestatistics.Severalpreviousresults,,suchas[1]and[2]areextendedtoAR(q)nonlinearregressionmodels.

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简介：一般Q过程的唯一性问题,已由侯振挺教授彻底解决,即著名的侯振挺定理。但由Q矩阵的元素自身来判定Q过程的唯一性,仍是十分有意义的,如同对角型Q矩阵那样,它反过来又说明了侯振挺定理的有力性。本文对一类特殊的Q矩阵,给出了仅依赖于Q矩阵元素的唯一性判别准则。作为其特例,可以得到对角型Q矩阵的唯一性条件。特别有趣的是,即便对一般的Q,我们给出的条件也是必要的,由此我们可很方便地由Q矩阵本身断言某些Q过程必定是不唯一的。

简介：主要讨论Q型亚纯函数的唯一性问题,推广并改进文[1],[4]的有关结果.

简介：TheIncompleteOrthogonalizationMethod(IOM(q)),atruncatedversionoftheFullOrthogonalizationMethod(FOM)proposedbySaad,hasbeenusedforsolvinglargeunsymmetriclinearsystmes.However,theIOM(q)exhibitesirregularconvergencebehaviorwithwildoscillationintheresidualnormsthoughittendstodecreaseinaveryslowmanner,whichisowingtothelackofminimizationpropertyovertheKrylovsubspace.QMRmethodproposedbyFreund,GutknechtandNachtigal,owingtoitsabilitytoavoidbreakdownsandsmoothconvergencebehavior,isarobustiterativesolverforgeneralnonsingularunsymmetriclinearsystems.Inthispaper,weproposeanovelquasi-minimalresidual(QMR)variantoftheIncompleteOrthogonalizationMethod(IOM(q)).Numericalexpermentsshowthatithassmoothconvergencebehaviorandismoreeffective,especiallywhenusingitsrestartedversion.

简介：在不定积分的教学中,我们会碰到形如integralfromn=1（Pn（x）dx）/(（x+Px+q）q?)的积分,如同济二版高等数学