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 共查询到18条相似文献,搜索用时 31 毫秒
1.
杜炜  张建华 《数学学报》2008,51(1):129-134
设R是一个含单位元的可交换2-无挠环,且M_n(R)是R上的n×n阶矩阵代数.本文证明了M_n(R)(n≥2)上的满足Φ(ABA)=Φ(A)BA+AΦ(B)A+ABΦ(A)的映射Φ具有形式:存在T∈M_n(R)和R上的一个可加导子φ,使得对任意A= (a_(ij))∈M_n(R),有Φ(A)=AT-TA+A_φ,这里A_φ=(φ(a_(ij))).  相似文献   

2.
设$delta$是一个$*$-代数$mathcal A$到其左$mathcal A$-模$mathcal M$的可加映射, 如果对任意$Ainmathcal A$, 有$delta(A^2)=Adelta(A)+A^*delta(A)$, 则称$delta$~是一个可加Jordan左$*$-导子. 在本文中, 我们证明了复的单位$C^*$- 代数到其Banach左模的每个可加Jordan左$*$-导子都恒等于零. 设$Ginmathcal A$, 如果对任意$A,Bin mathcal A$, 当$AB=G$时, 有$delta(AB)=Adelta(B)+B^*delta(A)$, 则称$delta$在$G$处左$*$-可导. 我们证明了复的单位$C^*$-代数到其Banach左模的在单位点处左$*$-可导的连续可加映射恒等于零.  相似文献   

3.
套代数上的Jordan导子   总被引:10,自引:0,他引:10  
张建华 《数学学报》1998,41(1):205-021
本文主要研究套代数上的Jordan导子.证明了套代数上的任一Jordan导子都是内导子;作为应用最后讨论了套代数上的Jordan自同构.  相似文献   

4.
刘丹  张建华 《数学学报》2016,59(4):461-468
设u=Tri(A,M,B)是含单位元I的三角代数,()={()_n}_(n∈N)是u上一簇线性映射.本文证明了:如果对任意U,V∈u且UV=VU=I,有()_n(UV+VU)=∑_(i+j=n)(()_i(U)_(()_j)(V)+()_i(V)()_j(U)),则()={()_n}_(n∈N)是u上高阶导子.作为应用,得到了套代数上Jordan高阶导子的一个刻画.  相似文献   

5.
三角代数上的广义Jordan导子   总被引:1,自引:0,他引:1  
主要研究了三角代数上的广义Jordan导子.利用三角代数上广义Jordan导子和广义内导子的联系.证明了作用在一个含单位元的可交换环上的三角代数到其自身上的环线性广义Jordan导子是一个广义导子.  相似文献   

6.
A1,…,An的(n-1)-换位子记为pn(A1,…,An).令M是yon Neumann代数,n≥2是任意正整数,L:M→M是一个映射.本文证明了,若M不含I1型中心直和项,且L满足L(pn(A1,…,An))=∑nk=1pn(A1,…,Ak-1,L(Ak),Ak+1,…,An)对所有满足条件A1A2=0的A1,A2...  相似文献   

7.
设$mathcal{A}$是一个包含非平凡投影的单位素*-代数.本文证明了一个映射$Phi:mathcal{A}rightarrowmathcal{A}$满足对任意$A,B,Cinmathcal{A}$有$Phi([A,B]_{diamond}circC)=[Phi(A),B]_{diamond}circC+[A,Phi(B)]_{diamond}circC+[A,B]_{diamond}circPhi(C)$当且仅当$Phi$是一个可加的*-导子, 其中$Acirc B=A^{*}B+B^{*}A$和$[A,B]_{diamond}=A^{*}B-B^{*}A$.  相似文献   

8.
设T是定义在交换环上R的三角代数,φ:T×T→T是定义在T上的任意Jordan双导子.受[Comm.Algebra,2017,45(4):1741-1756]和[Linear Algebra Appl.,2009,431(9):1587-1602]研究的启发,本文致力研究φ的结构形式.我们指出在适当条件下Jordan双导子φ可以分解成内双导子和extremal双导子之和,推广了本方向现有成果.本文结果可直接应用于分块上三角矩阵代数和Hilbert空间定义的套代数.  相似文献   

9.
证明了TUHF代数丁上的Lie导子L形如D l.其中D是T上的结合导子,l是从T到它的中心Z上的线性映射且零化T中的括积.  相似文献   

10.
设A为包含非平凡幂等元且有单位的环(或代数),δ:A→A是可加(或线性)映射.称δ在零点Jordan可导,若δ(A)B+Aδ(B)+δ(B)A+Bδ(A)=0对任意满足AB+BA=0的A,B∈A成立.在一定条件下,证明了δ在零点Jordan可导当且仪当存在可加Jordan导子τ,使得δ(A)=τ(A)+δ(I)A对任意的A∈A成立.利用此结论,完全刻画了因子von Neumann代数上在零点Jordan可导的可加映射.此外,还刻画了一般von Neumann代数和C*代数上在零点Jordan可导的有界线性映射.  相似文献   

11.
    
Let 𝒜 be a unital Banach algebra and ? be a unital 𝒜-bimodule. We show that if δ is a linear mapping from 𝒜 into ? satisfying δ(ST)?=?δ(S)T?+Sδ(T) for any S, T?∈?𝒜 with ST?=?W, where W is a left or right separating point of ?, then δ is a Jordan derivation. Also, it is shown that every linear mapping h from 𝒜 into a unital Banach algebra ? which satisfies h(S)h(T)?=?h(ST) for any S,?T?∈?𝒜 with ST?=?W is a Jordan homomorphism if h(W) is a separating point of ?.  相似文献   

12.
    
Let 𝒜 be a unital algebra and let ? be a unitary 𝒜-bimodule. We consider Jordan generalized derivations mapping from 𝒜 into ?. Our results on unitary algebras are applied to triangular algebras. In particular, we prove that any Jordan generalized derivation of a triangular algebra is a generalized derivation.  相似文献   

13.
In this paper, it is proved that under certain conditions, each Jordan left derivation on a generalized matrix algebra is zero and each generalized Jordan left derivation is a generalized left derivation.  相似文献   

14.
15.
  总被引:5,自引:0,他引:5       下载免费PDF全文
In this paper, we shall show the following two results: (1) Let be a standard operator algebra with , if is a linear mapping on which satisfies that maps into for all , then is of the form for some in . (2) Let be a Hilbert space, if is a norm-continuous linear mapping on which satisfies that maps into for all self-adjoint projection in , then is of the form for some in .

  相似文献   


16.
    
We describe Novikov-Poisson algebras in which a Novikov algebra is not simple while its corresponding associative commutative derivation algebra is differentially simple. In particular, it is proved that a Novikov algebra is simple over a field of characteristic not 2 iff its associative commutative derivation algebra is differentially simple. The relationship is established between Novikov-Poisson algebras and Jordan superalgebras. Supported by RFBR (grant No. 05-01-00230), by SB RAS (Integration project No. 1.9), and by the Council for Grants (under RF President) and State Aid of Leading Scientific Schools (project NSh-344.2008.1). __________ Translated from Algebra i Logika, Vol. 47, No. 2, pp. 186–202, March–April, 2008.  相似文献   

17.
In this paper, we prove that any nonlinear Jordan higher derivation on triangular algebras is an additive higher derivation. As a byproduct, we obtain that any nonlinear Jordan derivation on nest algeb...  相似文献   

18.
Let A be a unital associative ring and M be a 2-torsion free A-bimodule. Using an elementary and constructive method we show that every Jordan derivation from Mn(A) into Mn(M) is a derivation.  相似文献   

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