简介：<正>Newkindsofstronglyzero-dimensionallocalesareintroducedandcharacterized,whicharedifferentfromJohnstone’s,andalmostallthetopologicalpropertiesforstronglyzero-dimensionalspaceshavethepointlosslocalicforms.Particularly.theStone-Cechcompactificationofastronglyzero-diluensionallocaleisstonglyzero-dimensional.

简介：Foranasymmetricmatrix,thezero-nonzeropatternPofentriescanbedescribedbyadigraphΓ(P)whichhasanarcifanentryisnonzero.Theminimumrankofazero-nonzeropatternisdefinedtobethesmallestpossiblerankoverallrealmatriceshavingthegivenzero-nonzeropattern.Definitionsofvariousgraphparametersthathavebeenusedtoboundminimumrankofazerononzeropattern,includingpathcovernumberandeditdistance,andthetrianglesizetri(P).Inthispaper,byconvertingadigraphintoanundirectedbipartitegraphG(U,V),wepresentanalgorithmforconstructingasub-bipartitegraphwiththeuniquemaximumperfectmatchingM',andobtainthattri(P)=|M'|forP.

简介：LetFλ={x∈(0,1){2nx}≥1/2k,n∈z+},z++={0,1,2,3,...},k∈N;F=U∞k=1Fλbeadecimalsetin(0,1),where{2nx}isthefractionalpartofanumber2nx.Inthisnote,weprovethatdirnнF=1andН1(F)=0,wheredimнisHausdroffdimension,andН1(F)istheHausdorffmeasureofF.

简介：ＡＳＩＭＰＬＩＣＩＡＬＨＯＭＯＴＯＰＹＡＬＧＯＲＩＴＨＭＦＯＲＣＯＭＰＵＴＩＮＧＺＥＲＯＰＯＩＮＴＳＯＮＰＯＬＹＴＯＰＥＳＣＨＥＮＫＡＩＺＨＯＵ（陈开周）；ＹＡＮＧＺＡＩＦＵ（杨再福）；ＬＩＡＮＧＺＨＥＮＧＬＩ（梁正礼）（ＤｅｐａｒｔｍｅｎｔｏｆＡｐ...

简介：Countdatawithexcesszerosareoftenencounteredinmanymedical,biomedicalandpublichealthapplications.Inthispaper,anextensionofzero-inflatedPoissonmixedregressionmodelsispresentedfordealingwithmultileveldataset,referredashierarchicalmixturezero-inflatedPoissonmixedregressionmodels.AstochasticEMalgorithmisdevelopedforobtainingtheMLestimatesofinterestedparametersandamodelcomparisonisalsoconsideredforcomparingmodelswithdifferentlatentclassesthroughBICcriterion.AnapplicationtotheanalysisofcountdatafromaShanghaiAdolescenceFitnessSurveyandasimulationstudyillustratetheusefulnessandeffectivenessofourmethodologies.

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简介：Forfirst-orderquasilinearhyperbolicsystemswithzeroeigenvalues,theauthorestablishesthelocalexactcontrollabilityinashortertime-periodbymeansofinternalcontrolsactingonsuitabledomains.Inparticular,undercertainspecialbutreasonablehypotheses,thelocalexactcontrollabilitycanberealizedonlybyinternalcontrols,andthecontroltimecanbearbitrarilysmall.

简介：Theimportanceofthezerosofmultwariablelinearsystemsiswell-knoiunintermsofmeasureobstructionstothecontrollabilityandthe.observability.Inthispaper,arecursivedecarnposiAmojinterconnectedsystemsisoutlinedbytakingintoaccountthesequentialstructureoftheconnnections.Thepaperextendsthe,coordinate,module-theoreticstudiesfromtheelementaryalgebraicsystemstheorytoincludethecaseojsuchlinearinterconnectedsystemswhichneednottobecontrollableorobservable.Also,thepropertiesofcontrollabilityandobservability,thedecouplingzerosandthesignalMakingissuesarecharacterized.

简介：它被Bouchet推测承认的每张bidirected图一没什么地方--零k流动将承认一没什么地方--零6流动。当6被216代替时，他证明conjecture是真的。Zyka与6改进了结果在30代替了。徐和张证明conjecture为6-edge-connected图是真的。并且为证明的4-edge-connected图，Raspaud和朱，它与6是真的在4代替了。在这份报纸，我们证明Bouchets推测与6是真的为3-edge-connected图在15代替了。

简介：在这篇文章，作者们与在正确一半飞机会聚的零目学习Laplace-Stieltjes变换的生长，定义指数的目和指数的低目，并且发现在他们之间的关系。类似于Dirichlet系列的一些结果被获得。

简介：Anumbilicalfreeorientedhypersurfacex:M→Rnwithnon-zeroprincipalcurvaturesiscalledaLaguerreisoparametrichypersurfaceifitsLaguerreformC=iCiωi=iρ1(Ei(logρ)(rri)Ei(r))ωivanishesandLaguerreshapeoperatorS=ρ1(S1rid)hasconstanteigenvalues.Hereρ=i(rri)2,r=r1+r2+···+rn1n1isthemeancurvatureradiusandSistheshapeoperatorofx.{Ei}isalocalbasisforLaguerremetricg=ρ2IIIwithdualbasis{ωi}andIIIisthethirdfundamentalformofx.Inthispaper,weclassifyallLaguerreisoparametrichypersurfacesinRn(n>3)withtwodistinctnon-zeroprincipalcurvaturesuptoLaguerretransformations.

简介：让AAB(X)B(X)的subalgebra正在包含身份操作员我 ；并且幂等P ；。建议那，:A→A，:A→A是戒指epimorphisms并且在那里存在一些在XX上嵌套NN以便 (P)(X) and (P)(X) (P)(X) and (P)(X)是NN的重要元素。让AA包含在AlgN and  : A→B(X)AlgN and  : A→B(X)的一个操作员是的所有等级印射的添加剂。是否，被看那是在零个点可引出的(,)，然后在那里存在添加剂(,)=derivation  : A→B(X)(,)=derivation  : A→B(X)以便(A)=(A)+(A)(I) for all A∈ A(A)=(A)+(A)(I) for all A∈ A。它也被看那是否是在零个点可引出的概括(,)，然后，添加剂被概括(,)推导。而且由这结果的使用，添加剂印射(概括)在几巢代数学上的零个点可引出的(,)，也被描绘。