简介:Inthispaper,westudynon-cosemisimpleHopfalgebrasthroughtheirunderlyingcoalgebrastructure.Weintroducetheconceptofthemaximalpointedsubcoalgebra/Hopfsubalgebra.Foranon-cosemisimpleHopfalgebraAwiththeChevalleyproperty,ifitsdiagramisaNicholsalgebra,thenthediagramofitsmaximalpointedHopfsubalgebraisalsoaNicholsalgebra.WhenAisoffinitedimension,weprovideanecessaryandsufficientconditionforA’sdiagramequalingthediagramofitsmaximalpointedHopfsubalgebra.
简介:LetHbeafinite-dimensionalweakHopfalgebraandAaleftH-modulealgebrawithitsinvariantsubalgebraA~H.WeprovethatthesmashproductA#HisanA-ringwithagrouplikecharacter,andgiveacriterionforA#HtobeFrobeniusoverA.UsingthetheoryofA-rings,wemainlyconstructaMoritacontextconnectingthesmashproductA#HandtheinvariantsubalgebraA~H,whichgeneralizesthecorrespondingresultsobtainedbyCohen,FischmanandMontgomery.
简介:Thepurposeofthispaperistopresentsomedualpropertiesofdualcomodule.Itturnsoutthatdualcomodulehasuniversalproperty(cf.Theorem2).Since(()*,()°)isanadjointpair(cf.Theorem3),somenicepropertiesoffunctor()°areobtained.FinelyTheoram4providesthatthecotensorproductisthedualofthetensorproductby(MAN)°≌M°□A.N°.Moreover,theresultHomA(M,N)≌Coma.(N°,M°)isprovedforfiterelatedmodulesM,NoverarefiexivealgebraA.
简介:Inthispaper,westudyaYetter-DrinfeldmoduleVoveraweakHopfalgebraH.AlthoughthecategoryofallleftH-modulesisnotabraidedtensorcategory,wecandefineaYetter-Drinfeldmodule.UsingthisYetter-DrinfeldmodulesV,weconstructNicholsalgebraB(V)overtheweakHopfalgebraH,andaseriesofweakHopfalgebras.Someresultsof[8]aregeneralized.
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:ItisprovedthatalinearlyrecursivesequenceofnindiceaoverfieldF(n≥1)isautorntaticallyaproductofnlioearlyrecurplvesequenceaof1-lndexoverFbythetheoryofHopfalgebras.Bytheway,thecorrespondencebetweenthesetoflinearlyrecursivesequenoesof1-indexandF[X]^0isgeneralisedtothecaseofn-index.
简介:Thispaperstudiesaclassofquarticsystemwhichismoregeneralandrealisticthanthequarticaccompanyingsystem.x′=-y+ex+lx~2+mxy+ny~2,y′=x(1-Ay)(1+Cy~2),(*)whereC>0.Sufficientconditionsareobtainedfortheuniquenessoflimitcycleofsystem(*)andsomemorein-depthconclusionsuchasHopfbifurcation.